PSY 111 Chapter Notes - Chapter 2: External Validity, Internal Validity, Institutional Review Board
Document Summary
Scientific method: an approach to testing beliefs: choosing a question, ex. Reliability: independent measurements of a given behavior are consistent. Interrater reliability: the agreement in the observations of two or more raters who witness the same behavior. The degree to which two or more people who observe the same behavior agree. Test-retest reliability: similarity of a person"s performance on two or more occasions. Give students an exam on monday and wednesday, test responses should be similar. Validity: the degree to which a test measures what it intends to measure. Internal validity: the results in experiments can be attributed to the variables that the researcher manipulated intentionally. Only valid when we are looking at studies that attempt to measure a cause and effect relationship. External validity: results can be generalized beyond a single research investigation. Reports: can be asked directly by a researcher and someone answers. Structured interviews: all participants are asked to answer the same questions.
