You Want to Replicate Barlett Et Al

Multiple Choice

You want to replicate Barlett et al.'s research on amount of blood in a video game and measures of aggression.Your independent variable has 4 levels: maximum blood, medium blood, low blood, and no blood.You want to conduct a between subjects design.How many total participants will you need if you want 10 participants in each level of the IV?

A) 10
B) 20
C) 30
D) 40