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definitions - Evaluation

evaluation (n.)

1.an approximate calculation of quantity or degree or worth"an estimate of what it would cost" "a rough idea how long it would take"

2.act of ascertaining or fixing the value or worth of

3.an appraisal of the value of something"he set a high valuation on friendship"

Evaluation (n.)

1.(MeSH)Studies determining the effectiveness or value of processes, personnel, and equipment, or the material on conducting such studies. For drugs and devices, CLINICAL TRIALS; DRUG EVALUATION; and DRUG EVALUATION, PRECLINICAL are available.

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Merriam Webster

EvaluationE*val`u*a"tion (?), n. [Cf. F. évaluation, LL. evaluatio.] Valuation; appraisement. J. S. Mill.

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definition (more)

definition of Wikipedia

synonyms - Evaluation

see also - Evaluation

evaluation (n.)

estimate, evaluate, rate


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analogical dictionary




Evaluation is a systematic determination of a subject's merit, worth and significance, using criteria governed by a set of standards. It can assist an organization to ascertain the degree of achievement or value in regards to the aim and objectives of an undertaken project.[1] The primary purpose of evaluation, in addition to gaining insight into prior or existing initiatives, is to enable reflection and assist in the identification of future change.[2]

Evaluation is often used to characterize and appraise subjects of interest in a wide range of human enterprises, including the arts, criminal justice, foundations, non-profit organizations, government, health care and other human services.



Evaluation is the comparison of actual impacts against strategic plans. It looks at original objectives, at what was accomplished and how it was accomplished. It can be formative, that is taking place during the life of a project or organization, with the intention of improving the strategy or way of functioning of the project or organisation. It can also be summative, drawing lessons from a completed project or an organisation that is no longer functioning.

Evaluation is inherently a theoretically informed approach (whether explicitly or not), and consequently a definition of evaluation would have be tailored to the theory, approach, needs, purpose and methodology of the evaluation itself. Having said this, evaluation has been defined as:

  • A systematic, rigorous, and meticulous application of scientific methods to assess the design, implementation, improvement or outcomes of a program. It is a resource-intensive process, frequently requiring resources, such as, evaluator expertise, labour, time and a sizeable budget[3]
  • 'The critical assessment, in as objective a manner as possible, of the degree to which a service or its component parts fulfils stated goals' (St Leger and Walsworth-Bell).[4] The focus of this definition is on attaining objective knowledge, and scientifically or quantitatively measuring predetermined and external concepts.
  • 'A study designed to assist some audience to assess an object’s merit and worth' (Shufflebeam).[4] In this definition the focus is on facts as well as value laden judgements of the programs outcomes and worth.


The main purpose of a program evaluation can be to "determine the quality of a program by formulating a judgment" Marthe Hurteau,Sylvain Houle,Stéphanie Mongiat (2009).[5]

An alternative view is that "projects, evaluators and other stakeholders (including funders) will all have potentially different ideas about how best to evaluate a project since each may have a different definition of ‘merit’. The core of the problem is thus about defining what is of value."[4] From this perspective, evaluation "is a contested term", as "evaluators" use the term evaluation to describe an assessment, or investigation of a program whilst others simply understand evaluation as being synonymous with applied research.

There are two function considering to the evaluation purpose Formative Evaluations provide the information on the improving a product or a process Summative Evaluations provide information of short-term effectiveness or long-term impact to deciding the adoption of a product or process.[6]

Not all evaluations serve the same purpose some evaluations serve a monitoring function rather than focusing solely on measurable program outcomes or evaluation findings and a full list of types of evaluations would be difficult to compile.[4] This is because evaluation is not part of a unified theoretical framework,[7] drawing on a number of disciplines, which include management and organisational theory, policy analysis, education, sociology, social anthropology, and social change.[8]


Within the last three decades there have been tremendous theoretical and methodological developments within the field of evaluation.[5] Despite its progress, there are still many fundamental problems faced by this field as "unlike medicine, evaluation is not a discipline that has been developed by practicing professionals over thousands of years, so we are not yet at the stage where we have huge encyclopaedias that will walk us through any evaluation step-by-step", or provide a clear definition of what evaluation entails (Davidson, 2005).[5] It could therefore be argued that a key problem that evaluators face is the lack of a clear definition of evaluation, which may "underline why program evaluation is periodically called into question as an original process, whose primary function is the production of legitimate and justified judgments which serve as the bases for relevant recommendations."[5] However, the strict adherence to a set of methodological assumptions may make the field of evaluation more acceptable to a mainstream audience but this adherence will work towards preventing evaluators from developing new strategies for dealing with the myriad problems that programs face.[8]

It is claimed that only a minority of evaluation reports are used by the evaluand (client) (Datta, 2006).[5] One justification of this is that "when evaluation findings are challenged or utilization has failed, it was because stakeholders and clients found the inferences weak or the warrants unconvincing" (Fournier and Smith, 1993).[5] Some reasons for this situation may be the failure of the evaluator to establish a set of shared aims with the evaluand, or creating overly ambitious aims, as well as failing to compromise and incorporate the cultural differences of individuals and programs within the evaluation aims and process.[4]

None of these problems are due to a lack of a definition of evaluation but are rather due to evaluators attempting to impose predisposed notions and definitions of evaluations on clients. The central reason for the poor utilization of evaluations is arguably[by whom?] due to the lack of tailoring of evaluations to suit the needs of the client, due to a predefined idea (or definition) of what an evaluation is rather than what the client needs are (House, 1980).[5]

The development of a standard methodology for evaluation will require arriving at applicable ways of asking and stating the results of questions about ethics such as agent-principal, privacy, stakeholder definition, limited liability and could-the-money-be-spent-more-wisely issues.


Depending on the topic of interest, there are professional groups that review the quality and rigor of evaluation processes.

Evaluating programs and projects, regarding their value and impact within the context they are implemented, can be ethically challenging. Evaluators may encounter complex, culturally specific systems resistant to external evaluation. Furthermore, the project organization or other stakeholders may be invested in a particular evaluation outcome. Finally, evaluators themselves may encounter "conflict of interest (COI)" issues, or experience interference or pressure to present findings that support a particular assessment.

General professional codes of conduct, as determined by the employing organization, usually cover three broad aspects of behavioral standards, and include inter-collegial relations (such as respect for diversity and privacy), operational issues (due competence, documentation accuracy and appropriate use of resources) and conflicts of interest (nepotism, accepting gifts and other kinds of favoritism).[9] However, specific guidelines particular to the evaluator’s role that can be utilized in the management of unique ethical challenges are required. The Joint Committee on Standards for Educational Evaluation has developed standards for program, personnel and student evaluation. The Joint Committee standards are broken into four sections: Utility, Feasibility, Propriety and Accuracy. Various European institutions have also prepared their own standards, more or less related to those produced by the Joint Committee. They provide guidelines about basing value judgments on systematic inquiry, evaluator competence and integrity, respect for people, and regard for the general and public welfare.[10]

The American Evaluation Association has created a set of Guiding Principles for evaluators.[11] The order of these principles does not imply priority among them; priority will vary by situation and evaluator role. The principles run as follows:

  • Systematic Inquiry: evaluators conduct systematic, data-based inquiries about whatever is being evaluated. This requires quality data collection, including a defensible choice of indicators, which lends credibility to findings.[12] Findings are credible when they are demonstrably evidence-based, reliable and valid. This also pertains to the choice of methodology employed, such that it is consistent with the aims of the evaluation and provides dependable data. Furthermore, utility of findings is critical such that the information obtained by evaluation is comprehensive and timely, and thus serves to provide maximal benefit and use to stakeholders.[9]
  • Competence: evaluators provide competent performance to stakeholders. This requires that evaluation teams comprise an appropriate combination of competencies, such that varied and appropriate expertise is available for the evaluation process, and that evaluators work within their scope of capability.[9]
  • Integrity/Honesty: evaluators ensure the honesty and integrity of the entire evaluation process. A key element of this principle is freedom from bias in evaluation and this is underscored by three principles: impartiality, independence and transparency.

Independence is attained through ensuring independence of judgment is upheld such that evaluation conclusions are not influenced or pressured by another party, and avoidance of conflict of interest, such that the evaluator does not have a stake in a particular conclusion. Conflict of interest is at issue particularly where funding of evaluations is provided by particular bodies with a stake in conclusions of the evaluation, and this is seen as potentially compromising the independence of the evaluator. Whilst it is acknowledged that evaluators may be familiar with agencies or projects that they are required to evaluate, independence requires that they not have been involved in the planning or implementation of the project. A declaration of interest should be made where any benefits or association with project are stated. Independence of judgment is required to be maintained against any pressures brought to bear on evaluators, for example, by project funders wishing to modify evaluations such that the project appears more effective than findings can verify.[9]

Impartiality pertains to findings being a fair and thorough assessment of strengths and weaknesses of a project or program. This requires taking due input from all stakeholders involved and findings presented without bias and with a transparent, proportionate and persuasive link between findings and recommendations. Thus evaluators are required to delimit their findings to evidence. A mechanism to ensure impartiality is external and internal review. Such review is required of significant (determined in terms of cost or sensitivity) evaluations. The review is based on quality of work and the degree to which a demonstrable link is provided between findings and recommendations.[9]

Transparency requires that stakeholders are aware of the reason for the evaluation, the criteria by which evaluation occurs and the purposes to which the findings will be applied. Access to the evaluation document should be facilitated through findings being easily readable, with clear explanations of evaluation methodologies, approaches, sources of information and costs incurred.[9]

  • Respect for People: Evaluators respect the security, dignity and self-worth of the respondents, program participants, clients, and other stakeholders with whom they interact.This is particularly pertinent with regards to those who will be impacted upon by the evaluation findings.[12] Protection of people includes ensuring informed consent from those involved in the evaluation, upholding confidentiality, and ensuring that the identity of those who may provide sensitive information towards the program evaluation is protected.[13] Evaluators are ethically required to respect the customs and beliefs of those who are impacted upon by the evaluation or program activities. Examples of how such respect is demonstrated is through respecting local customs e.g. dress codes, respecting peoples privacy, and minimizing demands on others' time.[9] Where stakeholders wish to place objections to evaluation findings, such a process should be facilitated through the local office of the evaluation organization, and procedures for lodging complaints or queries should be accessible and clear.
  • Responsibilities for General and Public Welfare: Evaluators articulate and take into account the diversity of interests and values that may be related to the general and public welfare. Access to evaluation documents by the wider public should be facilitated such that discussion and feedback is enabled.[9]

Furthermore, the international organizations such as the I.M.F. and the World Bank have independent evaluation functions. The various funds, programmes, and agencies of the United Nations has a mix of independent, semi-independent and self-evaluation functions, which have organized themselves as a system-wide UN Evaluation Group (UNEG),[12] that works together to strengthen the function, and to establish UN norms and standards for evaluation. There is also an evaluation group within the OECD-DAC, which endeavors to improve development evaluation standards.[14]


Evaluation approaches are conceptually distinct ways of thinking about, designing and conducting evaluation efforts. Many of the evaluation approaches in use today make truly unique contributions to solving important problems, while others refine existing approaches in some way.

  Classification of approaches

Two classifications of evaluation approaches by House[15] and Stufflebeam and Webster[16] can be combined into a manageable number of approaches in terms of their unique and important underlying principles.[clarification needed]

House considers all major evaluation approaches to be based on a common ideology entitled liberal democracy. Important principles of this ideology include freedom of choice, the uniqueness of the individual and empirical inquiry grounded in objectivity. He also contends that they are all based on subjectivist ethics, in which ethical conduct is based on the subjective or intuitive experience of an individual or group. One form of subjectivist ethics is utilitarian, in which “the good” is determined by what maximizes a single, explicit interpretation of happiness for society as a whole. Another form of subjectivist ethics is intuitionist/pluralist, in which no single interpretation of “the good” is assumed and such interpretations need not be explicitly stated nor justified.

These ethical positions have corresponding epistemologiesphilosophies for obtaining knowledge. The objectivist epistemology is associated with the utilitarian ethic; in general, it is used to acquire knowledge that can be externally verified (intersubjective agreement) through publicly exposed methods and data. The subjectivist epistemology is associated with the intuitionist/pluralist ethic and is used to acquire new knowledge based on existing personal knowledge, as well as experiences that are (explicit) or are not (tacit) available for public inspection. House then divides each epistemological approach into two main political perspectives. Firstly, approaches can take an elite perspective, focusing on the interests of managers and professionals; or they also can take a mass perspective, focusing on consumers and participatory approaches.

Stufflebeam and Webster place approaches into one of three groups, according to their orientation toward the role of values and ethical consideration. The political orientation promotes a positive or negative view of an object regardless of what its value actually is and might be—they call this pseudo-evaluation. The questions orientation includes approaches that might or might not provide answers specifically related to the value of an object—they call this quasi-evaluation. The values orientation includes approaches primarily intended to determine the value of an object—they call this true evaluation.

When the above concepts are considered simultaneously, fifteen evaluation approaches can be identified in terms of epistemology, major perspective (from House), and orientation.[16] Two pseudo-evaluation approaches, politically controlled and public relations studies, are represented. They are based on an objectivist epistemology from an elite perspective. Six quasi-evaluation approaches use an objectivist epistemology. Five of them—experimental research, management information systems, testing programs, objectives-based studies and content analysis—take an elite perspective. Accountability takes a mass perspective. Seven true evaluation approaches are included. Two approaches, decision-oriented and policy studies, are based on an objectivist epistemology from an elite perspective. Consumer-oriented studies are based on an objectivist epistemology from a mass perspective. Two approaches—accreditation/certification and connoisseur studies—are based on a subjectivist epistemology from an elite perspective. Finally, adversary and client-centered studies are based on a subjectivist epistemology from a mass perspective.

  Summary of approaches

The following table is used to summarize each approach in terms of four attributes—organizer, purpose, strengths, and weaknesses. The organizer represents the main considerations or cues practitioners use to organize a study. The purpose represents the desired outcome for a study at a very general level. Strengths and weaknesses represent other attributes that should be considered when deciding whether to use the approach for a particular study. The following narrative highlights differences between approaches grouped together.

Summary of approaches for conducting evaluations
Approach Attribute
Organizer Purpose Key strengths Key weaknesses
Politically controlled Threats Get, keep or increase influence, power or money. Secure evidence advantageous to the client in a conflict. Violates the principle of full & frank disclosure.
Public relations Propaganda needs Create positive public image. Secure evidence most likely to bolster public support. Violates the principles of balanced reporting, justified conclusions, & objectivity.
Experimental research Causal relationships Determine causal relationships between variables. Strongest paradigm for determining causal relationships. Requires controlled setting, limits range of evidence, focuses primarily on results.
Management information systems Scientific efficiency Continuously supply evidence needed to fund, direct, & control programs. Gives managers detailed evidence about complex programs. Human service variables are rarely amenable to the narrow, quantitative definitions needed.
Testing programs Individual differences Compare test scores of individuals & groups to selected norms. Produces valid & reliable evidence in many performance areas. Very familiar to public. Data usually only on testee performance, overemphasizes test-taking skills, can be poor sample of what is taught or expected.
Objectives-based Objectives Relates outcomes to objectives. Common sense appeal, widely used, uses behavioral objectives & testing technologies. Leads to terminal evidence often too narrow to provide basis for judging the value of a program.
Content analysis Content of a communication Describe & draw conclusion about a communication. Allows for unobtrusive analysis of large volumes of unstructured, symbolic materials. Sample may be unrepresentative yet overwhelming in volume. Analysis design often overly simplistic for question.
Accountability Performance expectations Provide constituents with an accurate accounting of results. Popular with constituents. Aimed at improving quality of products and services. Creates unrest between practitioners & consumers. Politics often forces premature studies.
Decision-oriented Decisions Provide a knowledge & value base for making & defending decisions. Encourages use of evaluation to plan & implement needed programs. Helps justify decisions about plans & actions. Necessary collaboration between evaluator & decision-maker provides opportunity to bias results.
Policy studies Broad issues Identify and assess potential costs & benefits of competing policies. Provide general direction for broadly focused actions. Often corrupted or subverted by politically motivated actions of participants.
Consumer-oriented Generalized needs & values, effects Judge the relative merits of alternative goods & services. Independent appraisal to protect practitioners & consumers from shoddy products & services. High public credibility. Might not help practitioners do a better job. Requires credible & competent evaluators.
Accreditation / certification Standards & guidelines Determine if institutions, programs, & personnel should be approved to perform specified functions. Helps public make informed decisions about quality of organizations & qualifications of personnel. Standards & guidelines typically emphasize intrinsic criteria to the exclusion of outcome measures.
Connoisseur Critical guideposts Critically describe, appraise, & illuminate an object. Exploits highly developed expertise on subject of interest. Can inspire others to more insightful efforts. Dependent on small number of experts, making evaluation susceptible to subjectivity, bias, and corruption.
Adversary Evaluation “Hot” issues Present the pro & cons of an issue. Ensures balances presentations of represented perspectives. Can discourage cooperation, heighten animosities.
Client-centered Specific concerns & issues Foster understanding of activities & how they are valued in a given setting & from a variety of perspectives. Practitioners are helped to conduct their own evaluation. Low external credibility, susceptible to bias in favor of participants.
Note. Adapted and condensed primarily from House (1978) and Stufflebeam & Webster (1980).[16]


Politically controlled and public relations studies are based on an objectivist epistemology from an elite perspective.[clarification needed] Although both of these approaches seek to misrepresent value interpretations about an object, they function differently from each other. Information obtained through politically controlled studies is released or withheld to meet the special interests of the holder, whereas public relations information creates a positive image of an object regardless of the actual situation. Despite the application of both studies in real scenarios, neither of these approaches is acceptable evaluation practice.

  Objectivist, elite, quasi-evaluation

As a group, these five approaches represent a highly respected collection of disciplined inquiry approaches. They are considered quasi-evaluation approaches because particular studies legitimately can focus only on questions of knowledge without addressing any questions of value. Such studies are, by definition, not evaluations. These approaches can produce characterizations without producing appraisals, although specific studies can produce both. Each of these approaches serves its intended purpose well. They are discussed roughly in order of the extent to which they approach the objectivist ideal.

  • Experimental research is the best approach for determining causal relationships between variables. The potential problem with using this as an evaluation approach is that its highly controlled and stylized methodology may not be sufficiently responsive to the dynamically changing needs of most human service programs.
  • Management information systems (MISs) can give detailed information about the dynamic operations of complex programs. However, this information is restricted to readily quantifiable data usually available at regular intervals.
  • Testing programs are familiar to just about anyone who has attended school, served in the military, or worked for a large company. These programs are good at comparing individuals or groups to selected norms in a number of subject areas or to a set of standards of performance. However, they only focus on testee performance and they might not adequately sample what is taught or expected.
  • Objectives-based approaches relate outcomes to prespecified objectives, allowing judgments to be made about their level of attainment. Unfortunately, the objectives are often not proven to be important or they focus on outcomes too narrow to provide the basis for determining the value of an object.
  • Content analysis is a quasi-evaluation approach because content analysis judgments need not be based on value statements. Instead, they can be based on knowledge. Such content analyses are not evaluations. On the other hand, when content analysis judgments are based on values, such studies are evaluations.

  Objectivist, mass, quasi-evaluation

Accountability is popular with constituents because it is intended to provide an accurate accounting of results that can improve the quality of products and services. However, this approach quickly can turn practitioners and consumers into adversaries when implemented in a heavy-handed fashion.

  • Objectivist, elite, true evaluation
  • Decision-oriented studies are designed to provide a knowledge base for making and defending decisions. This approach usually requires the close collaboration between an evaluator and decision-maker, allowing it to be susceptible to corruption and bias.
  • Policy studies provide general guidance and direction on broad issues by identifying and assessing potential costs and benefits of competing policies. The drawback is these studies can be corrupted or subverted by the politically motivated actions of the participants.

  Objectivist, mass, true evaluation

  • Consumer-oriented studies are used to judge the relative merits of goods and services based on generalized needs and values, along with a comprehensive range of effects. However, this approach does not necessarily help practitioners improve their work, and it requires a very good and credible evaluator to do it well.

  Subjectivist, elite, true evaluation

  • Accreditation / certification programs are based on self-study and peer review of organizations, programs, and personnel. They draw on the insights, experience, and expertise of qualified individuals who use established guidelines to determine if the applicant should be approved to perform specified functions. However, unless performance-based standards are used, attributes of applicants and the processes they perform often are overemphasized in relation to measures of outcomes or effects.
  • Connoisseur studies use the highly refined skills of individuals intimately familiar with the subject of the evaluation to critically characterize and appraise it. This approach can help others see programs in a new light, but it is difficult to find a qualified and unbiased connoisseur.

  Subjectivist, mass, true evaluation

  • The adversary approach focuses on drawing out the pros and cons of controversial issues through quasi-legal proceedings. This helps ensure a balanced presentation of different perspectives on the issues, but it is also likely to discourage later cooperation and heighten animosities between contesting parties if “winners” and “losers” emerge.


  • Client-centered studies address specific concerns and issues of practitioners and other clients of the study in a particular setting. These studies help people understand the activities and values involved from a variety of perspectives. However, this responsive approach can lead to low external credibility and a favorable bias toward those who participated in the study.

  Methods and techniques

Evaluation is methodologically diverse using both qualitative methods and quantitative methods, including case studies, survey research, statistical analysis, and model building among others. A more detailed list of methods, techniques and approaches for conducting evaluations would include the following:

  See also


  1. ^ Staff (1995-2012). "2. What Is Evaluation?". International Center for Alcohol Policies - Analysis. Balance. Partnership.. International Center for Alcohol Policies. http://www.icap.org/PolicyTools/Toolkits/EvaluationToolkit/2WhatIsEvaluation/tabid/441/Default.aspx. Retrieved 13 May 2012. 
  2. ^ Sarah del Tufo (13). "WHAT is evaluation?". Evaluation Trust. The Evaluation Trust. http://www.evaluationtrust.org/evaluation/evaluate. Retrieved 13 May 2012. 
  3. ^ Rossi, P.H.; Lipsey, M.W., & Freeman, H.E. (2004). Evaluation: A systematic approach (7th ed.). Thousand Oaks: Sage. ISBN 978-0-7619-0894-4. 
  4. ^ a b c d e Reeve, J; Peerbhoy, D. (2007). "Evaluating the evaluation: Understanding the utility and limitations of evaluation as a tool for organizational learning". Health Education Journal 66 (2): 120–131. DOI:10.1177/0017896907076750. 
  5. ^ a b c d e f g Hurteau, M.; Houle, S., & Mongiat, S. (2009). "How Legitimate and Justified are Judgments in Program Evaluation?". Evaluation 15 (3): 307–319. DOI:10.1177/1356389009105883. http://evi.sagepub.com/content/15/3/307.abstract. 
  6. ^ Staff (2011). "Evaluation Purpose". designshop - lessons in effective teaching. Learning Technologies at Virginia Tech. http://www.edtech.vt.edu/edtech/id/eval/eval_purpose.html. Retrieved 13 May 2012. 
  7. ^ Alkin; Ellett (1990). not given. p. 454. 
  8. ^ a b Potter, C. (2006). "Psychology and the art of program evaluation". South African journal of psychology 36 (1): 82–102. 
  9. ^ a b c d e f g h David Todd (2007). GEF Evaluation Office Ethical Guidelines. Washington, DC, United States: Global Environment Facility Evaluation Office. http://www.thegef.org/gef/sites/thegef.org/files/documents/EthicalGuidelines.pdf. 
  10. ^ Staff (2012). "News and Events". Joint Committee on Standards for Educational Evaluation. Joint Committee on Standards for Educational Evaluation. http://www.wmich.edu/evalctr/jc/. Retrieved 13 May 2012. 
  11. ^ Staff (July 2004). "AMERICAN EVALUATION ASSOCIATION GUIDING PRINCIPLES FOR EVALUATORS". American Evaluation Association. American Evaluation Association. http://www.eval.org/Publications/GuidingPrinciples.asp. Retrieved 13 May 2012. 
  12. ^ a b c Staff (2012). "UNEG Home". United Nations Evaluation Group. United Nations Evaluation Group. http://www.uneval.org. Retrieved 13 May 2012. 
  13. ^ World Bank Institute (2007). "Monitoring & Evaluation for Results Evaluation Ethics What to expect from your evaluators" (PDF). World Bank Institute. The World Bank Group. http://siteresources.worldbank.org/INTUKRAINE/Resources/328335-1212401346836/5Ethics.pdf. Retrieved 13 May 2012. 
  14. ^ Staff. "DAC Network On Development Evaluation". OECD - Better Policies For Better Lives. OECD. http://www.oecd.org/site/0,2865,en_21571361_34047972_1_1_1_1_1,00.html. Retrieved 13 May 2012. 
  15. ^ House, E. R. (1978). Assumptions underlying evaluation models. Educational Researcher. 7(3), 4-12.
  16. ^ a b c Stufflebeam, D. L., & Webster, W. J. (1980). "An analysis of alternative approaches to evaluation". Educational Evaluation and Policy Analysis. 2(3), 5-19. OCLC 482457112

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○   Wildcard, crossword
○   Lettris
○   Boggle.


Lettris is a curious tetris-clone game where all the bricks have the same square shape but different content. Each square carries a letter. To make squares disappear and save space for other squares you have to assemble English words (left, right, up, down) from the falling squares.


Boggle gives you 3 minutes to find as many words (3 letters or more) as you can in a grid of 16 letters. You can also try the grid of 16 letters. Letters must be adjacent and longer words score better. See if you can get into the grid Hall of Fame !

English dictionary
Main references

Most English definitions are provided by WordNet .
English thesaurus is mainly derived from The Integral Dictionary (TID).
English Encyclopedia is licensed by Wikipedia (GNU).


The wordgames anagrams, crossword, Lettris and Boggle are provided by Memodata.
The web service Alexandria is granted from Memodata for the Ebay search.
The SensagentBox are offered by sensAgent.


Change the target language to find translations.
Tips: browse the semantic fields (see From ideas to words) in two languages to learn more.

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