A vision scientist obtained a random sample of 56 individuals from a psychology department participant pool. From each participant, he obtained measures of attentional focus (x1), digit span (x2), list-learning efficiency (x3), motion aftereffect duration (x4), and time to complete a trail-making task (y). The sum of squares for y was 150. She submitted these results to a hierarchical regression with x1 and x3 entered on Step 1, then x2 and x4 added on Step 2. The sum of squares for the ? values was 36 on Step 1 and 42 on Step 2. Therefore, the change in explained variance (?R2) is ______.
a. .09
b. .05
c. .04
d. .28
Ans: C
You might also like to view...
Freud felt insufficient or excessive gratification in a stage of development would lead to developmental problems
a. True b. False Indicate whether the statement is true or false
After 130 years of psi investigation, scientists
a. have concluded that ESP definitely exists. b. have concluded that ESP definitely does not exist. c. cannot prove conclusively whether or not ESP exists. d. have determined that psychokinesis exists, but the other three psi phenomenon do not exist.
Apply Kelly’s personal construct theory to Colleen’s college experiences. What appear to be her superordinate constructs? Are her constructs permeable?
What will be an ideal response?
Ecstasy is a pressed pill; ___________ is a purified powder in capsules.
A. "Mary Jane" B. "Lucy" C. "Molly" D. "Angel"