PSYC 2017 Chapter : Chapter 3 PostJLHSpring2015
Document Summary
An operational definition of an abstract concept (depression, memory ability, etc. ) allows the researcher to define it for the purpose of measurement and data collection. Klinesmith, j. , kasser, t. , mcandrew, f. t. (2006) guns, testosterone, and aggression: an experimental test of a mediational hypothesis. Data collection techniques: external validity: the degree to which the results of a study apply to individuals and realistic behaviors outside the study. Data collection techniques: internal validity: the degree to which a study provides causal information about behavior. External validity concerns: relationship between internal and external validity often an inverse relationship. Reliability: the degree to which the results of a study can be replicated under similar conditions. Stability, consistency or repeatability: experimental validity. Correctness or truthfulness of the inference drawn from research. Reliable valid ? not valid not reliable nor valid. Relationship between reliability and validity: experimental reliability can exist without experimental validity, experimental validity cannot exist without experimental reliability.
