Principles of Experimental Design in Psychology Quiz

Random assignment ensures unbiased group allocation.

Debriefing ensures participants understand the study's purpose and have the opportunity to ask questions.

Random assignment helps minimize participant differences across experimental groups.

Regression to the mean is a statistical phenomenon, not a threat to internal validity.

A control group establishes a baseline against which the experimental group is compared.

Blinding prevents participant and researcher biases by keeping them unaware of the assigned conditions.

Correlational design does not involve manipulation of variables, unlike experimental designs.

External validity assesses the generalizability of study findings beyond the current context.

Factorial design involves manipulating more than one independent variable simultaneously.

Factorial designs may fail to account for interactions between manipulated variables.

Main effects compare overall differences between groups, while interactions examine how one variable's effect changes depending on another.

Quasi-experimental designs lack full control over independent variables compared to experimental designs.