Scientific Methods (copy)

Experiments

controlled studies used by researchers to test ideas about human and animal behavior, thoughts, and emotions

Experimental group

receives treatment

Control group

Doesnt receive treatment

Independent variable

What researcher manipulates (doesnt change)

Dependent variable

what researcher observes (changes based of the independent variable)

Operational Definition

How variable is defined for a certain experiment

Confound

Differences between groups other than the Independent variable

Experimenter expectations

Experimenter can influence outcome of study with there expectations even if they dont intend to

Placebo effect

improvement resulting from mere expectation of improvement

Participant demand

Participants try to behave in the way they believe the experimenter wants them to

Double-Blind design

Neither participant nor experimenter knows which group receives the treatment and which doesn’t

Quasi Experiments

Takes advantage of naturally occurring circumstances to control for as many extra variables as possible (NO RANDOM ASSIGNMENT)

Surveys

a method of gathering information from a group of people by asking questions to learn about their opinions, behaviors, or knowledge