The science concerned with evaluating the attributes of psychological tests Relevant to all aspects of psychology- research and practice There are two major attributes of psychological tests- reliability and [...]

Variance: Represents the amount of variability in the data Three main methods of representing variability o Range (smallest and largest data points) o Standard deviation o Variance Correlation: Standardised [...]

Rating scales: Most widely used response format, respondents provide ratings indicating how strongly they feel positively or negatively on n issue Likert scales use words to anchor the numerical [...]

Is pertinent to the consistency of measurement There are various types of reliability, all of which are estimated quantitatively Most basic way to understand the concept is through repeated [...]

Validity: Represents the degree to which the observed scores from a test actually represent the attribute or construct of interest Reliability doesn’t guarantee validity, but without reliability you have [...]

Cronbach’s Alpha assumptions: 1- That the indicators (items) are essentially tau-equivalent o This implies that each item is an equally strong indicator of the true score scores, but the [...]

Validity- defined & described: The degree to which a test measures what it is supposed to measure The most important issue in psychological measurement More formally, the degree to [...]

Is relevant to determining whether the scores of a measure correspond to the number and nature of dimensions of theorised dimensions that underlie the construct of interest Researchers use [...]

Convergent and discriminant evidence: Convergent and discriminant validity reflects the degree to which test scores have the ‘correct’ patterns of associations with other variables The conceptual foundation of a [...]

Individual differences in emotional, interpersonal, experiential, attitudinal and motivational styles Use of personality tests (PT): Research o determine the number/nature of dimensions that makes us unique o Stability of [...]

Biases that systematically obscure or cause differences among groups of respondent test scores unjustifiably It is important that test scores do not discriminate unjustifiability against any particular group In [...]

Classical test theory: Classical test theory incorporates terms such as ‘observed scores’ and ‘true scores’ There is a substantial emphasis on the description and estimation of the reliability of [...]

Do people’s responses to constructs reflect their levels of honesty and/or integrity? How one might’s desire in how they are seen affect the validity of interpretations of the responses? [...]

Defined- the education of elations and correlates o The ability to detect patterns in stimuli It’s what person does when they don’t know what to do The ability to [...]