PSYB32H3 Chapter Notes - Chapter 4: Sweat Gland, Visible Minority, Treatment As Prevention
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Generally, reliability refers to consistency of measurement. Inter-rater reliability: the degree to which two independent observers or judges agree. Alternate-form reliability: using two forms of tests rather than giving the same test twice, perhaps when there is concern that people will remember their answers from the first test and aim merely to be consistent. Internal consistency reliability: assesses whether the items are related to one another (like on an anxiety questionnaire all the questions are related to anxiety) In each of these types of reliability, a correlation (measure of how closely 2 variables are related) is calculated b/w raters or sets of items the higher correlation, the better the reliability. Generally, is related to whether a measure fulfills its intended purpose. Related to validity; unreliable measure will not have good validity. Content validity: whether a measure adequately samples the domain of interest.