PSY 0310 Lecture Notes - Lecture 2: Random Assignment, Psy, Cell Migration
Document Summary
Psy 0310 day two: choose a question to be answered, formulate a hypothesis regarding the question, develop a method for testing the hypothesis, use data yielded by the method to draw a conclusion regarding the. Good research=relevance to hypothesis + reliability + validity hypothesis. Reliability: degree to which independent measurements of a given behavior are consistent. Interrater reliability: amount of agreement in the observations of different raters who witness the same behavior. Test-restest reliability: deg(cid:396)ee of si(cid:373)ila(cid:396)ity of a (cid:272)hild"s pe(cid:396)fo(cid:396)(cid:373)a(cid:374)(cid:272)e o(cid:374) t(cid:449)o o(cid:396) more occasions. Validity: make sure effects are due to factor being tested. Internal validity: degrees to which effects can be attributed to variable manipulated by the researcher. External validity: degree to which results can be generalized. Structured interviews: all participants are asked the same questions in the same order. Clinical interviews: questions are adjusted according to the answers given. Caveat: interviews give lots of data quickly but answers are often biased.
