A psychologist wants to know if eating a large breakfast improves IQ test scores in a sample of thirty 10-year-olds. The psychologist divides the subjects into three groups of ten and has one group eat a small breakfast, one group eat a medium-sized breakfast, and one group eat a large breakfast. In this study, the independent variable is:
A. the IQ test
B. the scores on the IQ test
C. the size of the breakfast
D. the number of subjects in each group
Answer: C
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The somatic nervous system controls what part of the body?
a. bone growth b. reflex muscles c. skeletal muscles and is under conscious control of these muscles d. heart muscles
Janice has nine genes for color perception on her x chromosomes. This means that Janice will _____
a) be able to see ultraviolet light. b) have synesthesia. c) perceive finer distinctions of shades of color. d) be color blind.
Which comment would most likely positively influence a student with weak self-efficacy?
a. You are just like your brother; I guess it’s a family trait. b. There’s no need to worry; you’ll do fine. c. Well, a lot of people don’t do well in math. d. Describe the step you just used to solve the problem; it seems to have worked well.
While the overall long-term health implications of e-cigarettes are still being studied, use of e-cigarettes can cause
A. hallucinations. B. addiction. C. weight gain. D. sleepiness.