Part 1: Please read the following scenarios. For eachscenario, answer the following questions: a) what is theindependent variable, b) what is the dependent variable, and c) isthis a between-subjects or within-subjects design?
- A child psychologist wants to determine the effects of clothversus paper diapers on toilet training. Day-old infants will beused to begin the project. The age at which diapers are no longerneeded (to the nearest week) will be determined.
- A researcher wants to determine whether rats learn a complexmaze more quickly when practice is spaced (spread out in time)rather than massed. The effects of massing practice trials (onetrial every 10 seconds) will be compared with the effects ofdistributing practice trials (one every 10 minutes). The number oftrials the rats need to learn the maze perfectly will becounted.
- A local brewery is test-marketing flavored beer. It wants tosee whether consumers prefer strawberry-, licorice-, oravocado-flavored beer. Several bottles of each flavor will be made.Consumers will fill out a questionnaire on how much they like theflavor, body, and aroma of the various flavors.
