01:830:101 Lecture Notes - Lecture 11: Confounding, Syphilis, Institutional Review Board

• School: Rutgers University
• Department: Psychology
• Course: 01:830:101
• Professor: graybrill

Document Summary

Research in the psychology field and the ethnics of this science. Validity: how accurately the measure captures the characteristics the researcher is trying to study. General research designs: correlational research designs, experimental research designs, modified experimental designs. Correlation = measure of the relationship between two variables which are both outside of the investigator"s control: examples of variables include aspects such as: height, weight, socio- economic level, number of years of education. Correlation coefficient = mathematical estimate of the strength and direction of a correlation. Size of the number between 0 and 1: closer to one (positive or negative) is a stronger relationship. Positive (+): as one variable increases, so does the other: negative (-): as one variable increase, the other decreases. Correlation causation: correlational research tells only if and how two variables are related. Two conditions can appear together and not cause each other. Example: the more someone weighs, the larger his or her vocabulary is.