AMCP (version 2.0.0)

chapter_4_exercise_21: The data used in Chapter 4, Exercise 21

Description

Data from Chapter 4 Exercise 21 of Designing Experiments and Analyzing Data: A Model Comparison Perspective (4th edition; Maxwell, Delaney, & Kelley). Scores on a multiple-choice memory test from the Kroes and colleagues (2014) study of electroconvulsive therapy (ECT) and memory reconsolidation; higher scores reflect more accurate memory. Participants were randomly assigned to three groups.

Usage

data(chapter_4_exercise_21)

Format

An object of class data.frame with 39 rows and 2 columns.

Variables

dv

memory-test score (higher scores reflect more accurate memory)

cond

group: 1 = Group A (ECT, tested 24 hours later), 2 = Group B (ECT, tested immediately after the procedure), 3 = Group C (control, no ECT, tested 24 hours later)

Synonym

C4E21

Author

Ken Kelley

References

Maxwell, S. E., Delaney, H. D., & Kelley, K. (2027). Designing experiments and analyzing data: A model comparison perspective (4th ed.). New York, NY: Routledge.

Examples

# Load the data
data(chapter_4_exercise_21)

# Or, alternatively load the data as
data(C4E21)

# View the structure
str(chapter_4_exercise_21)

# Brief summary of the data.
summary(chapter_4_exercise_21)