Dr. Smith is designing a study in which 50 people will be administered an experimental drug and 50 people will be administered a placebo. He will make sure that all potential respondents are equally likely to end up in either the experimental or control group. What is this practice called?

A) selective assignment
B) random assignment
C) determined assignment
D) confounding assignment

Random Assignment

A method used in experiments to place participants into different groups using randomization to reduce bias and ensure statistical significance.

Confounding Assignment

A situation in research where a variable other than the independent variable is potentially influencing the outcome of the study, making it difficult to isolate the effect of the independent variable.

Selective Assignment

Refers to a process or strategy where tasks, roles, or responsibilities are assigned to individuals based on specific criteria or attributes.