By the end of the primary circular reaction substage, Piaget's son Laurent was
a. discovering his hands by chance.
b. moving his hands in order to see them.
c. looking for toys that his father had hidden.
d. imitating his father's facial expressions.
b
You might also like to view...
A team of researchers has decided to employ the high-risk research design in a longitudinal study of adolescent alcohol use. What will these researchers have to do to conduct such a study?
a. put their subjects in risky situations b. select subjects based on the presence of specific risk factors c. take the risk of investigating an unlikely cause d. assess the risky behaviors displayed by the subjects
A sample of n = 9 scores has a variance of s2= 36 . What is the estimated standard error for the sample mean?
a. 1 b. 2 c. 4 d. 16
In an experimental study of the effects of practice on reaction time, practice would be the:
a. control group. b. independent variable. c. experimental group. d. dependent variable.
Which of the following is the most commonly recommended custodial arrangement?
A. joint legal custody B. joint physical custody C. sole custody without visitation D. sole custody with visitation