Flashcards
Research Skills Week 1
Cards in this deck (18)
- 1LikertScale using a response format where respondents select responses to an item from an ordered range, e.g., ‘strongly disagree’ (1), ‘disagree’ (2), etc., and a ranked score is given to the response as shown in the brackets.
- 2Semantic differentialScale measuring meaning of an object for the respon- dent by having them place it between the extremes of several bi-polar adjectives.
- 3ThurstoneScale in which raters assess the relative strength of each item and respondents agreeing with that item receive the average ‘scale value’ for it.
- 4Visual analogueScale where respondents mark their position on a line between two polar opposites and the distance of their mark from one extreme is measured and becomes a score.
- 5Diagnostic itemScale item not obviously or directly connected to the attitude object, yet which correlates well with overall scores and therefore has discriminatory power and predictive power.
- 6Discriminatory powerExtent to which an item, or the test as a whole, separates people along the scoring dimension.
- 7Factor analysisStatistical technique, using patterns of test or subtest correlations, that provides support for theoretical constructs by locating correlational ‘clusters’ and identi- fying explanatory factors.
- 8Psychometric testTest that attempts to quantify through measurement psychological constructs such as skills, abilities, character, etc.
- 9PsychometryThe technology of test creation for the quantification of psychological constructs.
- 10ReliabilityConsistency of a psychological scale.
- 11Cronbach's alphaA measure of scale reliability using the variance of respondents’ scores on each item in relation to overall variance on the scale.
- 12Item analysisChecking each item in a scale by comparing its relationship with total scores on the scale.
- 13Kuder-RichardsonA special form of Cronbach’s alpha performed on a test with dichotomous items (e.g., with answers ‘yes’/’no’).
- 14Split-half reliabilityCorrelation between scores on two equal parts of a test.
- 15External reliabilityConsistency of a test with itself when administered more than once.
- 16Test-retest reliabilityTesting of the same group of respondents twice on sep- arate occasions in order to estimate external reliability.
- 17Internal reliabilityConsistency between the items of a scale or test. Tendency for people to score at the same strength on similar items.
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- Flashcards on Research Skills Week 1, created by Olivia West on 25/02/2020.
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- Olivia West
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