exam 2 Flashcards
underlying hypothetical characteristics or processes that are hypothesized to exist but cannot directly be observed (example - intelligence)
conceptual variable
defining a variable in terms of procedures used to measure/or manipulate it
operational definition
degree to which items on a measure appear to be reasonable (subjective)
face validity
degree to which the items on a measure adequately represent the entire range or set of items that could have been appropriately included; (subjective)
content validity
refers to the consistency of measurement
reliability
increased by including similar items on a measure, by testing a diverse sample of individuals, and by using uniform testing procedures
reliability
refers to the truthfulness of a measure: Does it measure what it intends to measure?
validity
represents the extent to which a measure assesses the theoretical construct it is designed to assess
construct validity
determined by assessing convergent validity and discriminant validity
construct validity
yields consistent or similar results each time it is administered
reliable self-report measures
a large group of participants take the test twice and their scores on the tests should be similar
test-retest reliability
looks at how well a self-report measure aligns with a behavioral outcome (ability of a measure to predict an outcome)
criterion validity
when one measure recorded at one time predicts a criterion that occurs in the future
predictive validity
look at someone’s current behavior and compare it simultaneously to a self-report measure/assessment
concurrent validity
scores on a measure should correlate highly with scores on other measures of the same construct
convergent validity
scores on a measure should not correlate too strongly with scores on measures of other or unrelated constructs
discriminant validity
percentage of times two observers agree, over and beyond the degree of agreement that would be expected to occur by chance; it used with categorical data where you have mutually exclusive categories (nominal data)
Kappa
number of times agree / number of opportunities to agree X 100
interrater reliability
analyze with Spearman rank order correlation
ordinal data
Pearson product correlation
interval/ratio scale data
research methods that do not involve the manipulation of any variable by the researcher
descriptive methods
determination of the relation between 2 variables
correlational study
a study in which the variables to be studied are selected after they have occurred
ex post facto study
seeks to determine the percentage of the population that has a certain characteristic, holds a particular opinion, or engages in a particular behavior
descriptive survey