After Reading the Findings of Xu and Carey (1996), You

question 45

Multiple Choice

After reading the findings of Xu and Carey (1996) , you decide to test 9-month-old Charlie, whom you regularly babysit. First you bring a toy horse from behind a screen then hide it again, and then you bring a drum from behind the screen then hide it again. When you remove the screen that hid the toys, Charlie will be surprised if

• A) only the drum is revealed.
• B) two totally different toys are revealed.
• C) you named each toy as it appeared, but only the horse is revealed.
• D) you named each toy as it appeared and both toys are revealed.

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Definitions:

Variable

An element, feature, or factor that is liable to vary or change.

Analysis of Concomitance

Statistical techniques used to study the relationship between two or more events, characteristics, or conditions that occur simultaneously.

Reversed-Treatment Pretest-Posttest Design

A research design where participants receive treatments in reverse order across two periods, allowing the examination of treatment effects over time.

Selection-By-Maturation Interaction

A potential threat to internal validity in experiments, caused when differences between groups change over time in a way that affects the dependent variable.