In a within-subjects experiment, subjects are required to perform a complex motor task for the dependent variable. You find that they perform better in the second treatment than in the first. You conclude that your independent variable had a significant effect on motor behavior. However, an alternative explanation is that ________ produced a carryover effect.
A. sensitization
B. fatigue
C. habituation
D. learning
Answer: D
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For a repeated-measures study comparing two treatment conditions, a researcher obtains a sample of n = 9 difference scores with a mean of MD = 4 and a variance of s2= 36 . What is the value for the repeated-measures t statistic for these data?
a. 4/2 c. 4/6 b. 4/4 d. 4/36
Adequate vaginal lubrication is important when using a female condom because ____
a. it helps the condom stay in place c. it assures a satisfying sexual response b. it is essential for proper insertion d. it enhances penile sensation
Preschoolers’ first attempts to print often involve __________
A) writing in lowercase letters B) making a pretend grocery list C) writing a parent’s name D) their own name
Compared to a typical male brain, a typical female brain has more gray matter in the area that processes _____
a) visual-spatial relationships. b) emotional perception. c) speed of thought. d) self-image.