Dr. Dominguez conducted a study of children with attention-deficit/hyperactivity disorder
She developed a new medication that was significantly better than placebo in treating the disorder, but this effect was not found in a similar study conducted in another laboratory. Dr. Dominguez's study has __________ internal validity and __________ external validity.
a) high; high
b) high; low
c) low; high
d) low; low
b
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According to a large meta-analysis involving thousands of participants (Kling, Hyde, Showers & Buswell, 1999), ____
a. ?females have significantly lower self-esteem than males b. ?males have a very small advantage over females in self-esteem c. ?females have increasingly lower self-esteem than males over the life span d. ?males have a large advantage over females in self-esteem
North America today looks very different from the North American of even 20 years ago. The population is becoming ethnically diverse and:
a. older b. younger c. has an age gap, with more younger and more older individuals d. has a larger population of middle age adults than other age groups
Distant objects tend to look hazy, washed out in color, and lacking in detail, which illustrates
a. aerial perspective. b. light and shadow. c. the motion parallax. d. stereoscopic vision.
The distinction between semantic and procedural memory is the difference between
a. when it happened and where it happened. b. what it was and how one did it. c. how it happened and why it happened. d. how it was done and what it was