A true experiment enables psychologists to
A) Infer causality
B) Infer relationships between variables
C) Compare pre-existing groups
D) manipulate the data once collected

Question

Quizplus · Accepted Answer

True experiments involve the manipulation of an independent variable to observe its effect on a dependent variable while controlling for extraneous variables. This allows psychologists to infer causality, as they can conclude that changes in the independent variable caused changes in the dependent variable. Therefore, A is the correct choice. B is incorrect because inferring relationships between variables can occur through non-experimental research designs as well. C is incorrect because true experiments involve randomly assigning participants to conditions, rather than comparing pre-existing groups. D is incorrect because manipulating data after it has been collected would be considered unethical in research.

A True Experiment Enables Psychologists to