AMCP (version 2.0.0)

chapter_14_table_8: The data used in Chapter 14, Table 8

Description

The data used in Chapter 14, Table 8

Usage

data(chapter_14_table_8)

Format

An object of class data.frame with 20 rows and 3 columns.

Variables

M

participant mean reaction time across the 0 and 8 degree angle conditions

D

participant difference in reaction time, 8 degrees minus 0 degrees

Group

participant age (young or old)

Synonym

C14T8

Author

Ken Kelley

Details

Table 14.8 presents the M and D transformed scores formed from the two-angle reaction-time data of Table 14.7. For each participant, M is the mean reaction time across the 0-degree and 8-degree angle conditions, and D is the difference between the two conditions (8 degrees minus 0 degrees). In the multivariate (within-subjects) approach to this two-way design, the M scores carry the between-subjects information used to test the main effect of age, while the D scores carry the within-subjects information used to test the main effect of angle and the age-by-angle interaction. The mean M and D for the young participants are 561 and 168; the corresponding means for the old participants are 667.5 and 249.

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_14_table_8)

# Or, alternatively load the data as
data(C14T8)

# View the structure
str(chapter_14_table_8)