PSYCH 1100 Lecture Notes - The Control Group, Dependent And Independent Variables, Psych

• School: Lakehead University
• Department: Psychology
• Course: PSYCH 1100
• Professor: Thomas Kondzielewski

Document Summary

: condition(s) altered by the experimenter; experimenter sets their size, amount, or value these are suspected causes for behavioral differences. : demonstrate effects that independent variables have on behavior. The experimental group the group of subjects that gets exposed to the iv. The control group the group of subjects that get all conditions except the iv. Subject has an equal chance of being in either the experimental or control group. Self-selection: sometimes participants differ on variables that have not been assigned, so are not true iv, we can still look for correlations, but must be cautious in determining causation. Placebo: a fake pill (sugar) or injection (saline, placebos alter our expectations about our own emotional and physical reactions. If a placebo has any effect, might be based on suggestion, not chemistry. Changes in behavior that result from belief that one has ingested a drug these expectancies then influence bodily activities.