PS 101 Lecture Notes - Lecture 2: Descriptive Statistics, Random Assignment, Face Validity
Document Summary
Ps101: chapter 2: research methods in psychology lecture. Theory: organizes and explains observations by including propositions. Variable: any phenomenon that can differ or vary and takes on different values: continous variable: between minimum and maximum variable, categorial variable: a fixed number of values. These procedures are as similar to each other as possible. A representation of the population is the subject. Generalizability: studies the findings of an entire population. External validity: findings could be generalized outside of a lab setting. Experimental dilemma: balance between the internal and external validity. Reliability: measures consistency and does not fluctuate. Test retest reliability: tests yield relatively similar scores of same individual. Interator reliability: consistency among test subject (people) only measures are valid. Face validity: measure what it purports to measure. Construct validity: measure assess" what it claims to measure. Criterion validity: researcher distinguishes among groups on basis of behavior/responses. Part on participants score that is unrelated to true score.
