When a researcher directly controls or manipulates changes in the independent variable by exposing participants to the treatment conditions,
A) she is conducting a correlational study.
B) cause-and-effect relationships can be detected.
C) the correlational coefficient should be zero.
D) she is using a technique called matching.
Answer: B
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Which of the following is NOT one of the three basic needs proposed by Deci and Ryan?
a. Actualization b. Autonomy c. Competence d. Relatedness
When Billie takes her son, Joel, to the park one day, he demands to be held and does not want to get down to play on the equipment. When another young mother comes over and strikes up a conversation with Billie, Joel hides his head in his mother's skirt, and refuses to play with the other woman's child. Eventually, Billie leaves Joel with the other woman briefly so she can buy drinks for all of
them at the concession stand. Joel screams and cries, and is inconsolable. Joel's attachment relationship with his mother is best characterized as a. secure. b. resistant. c. avoidant. d. disorganized-disoriented.