A researcher has developed a drug to help patients whose chemotherapy has made them unable to eat. She hypothesizes that the new drug will increase eating at moderate levels, but will have toxic effects that reduce anxiety at high levels. She wants to present four different levels of the drug (placebo, low dose, moderate dose, and high dose) to different groups of subjects and measure the average
eating behavior of each group. She should use a _____ test to make inferences and draw conclusions from her data.
a. one-way ANOVA c. t test for independent samples
b. repeated measures ANOVA d. t test for related samples
A
The design that involves the use of multiple levels of a single independent variable (the different doses of the drug) requires a one-way ANOVA for an inferential test.
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Which of the following would cause you to make an external attribution for your friend's happiness? a. No one else is happy right now
b. Everyone else is happy right now. c. Your friend is happy most of the time. d. Your friend seems as happy in one situation as in another.
Which of the following describes the effect of an increase in the variance of the difference scores in a repeated-measures design?
a. Measures of effect size and the likelihood of rejecting the null hypothesis both decrease. b. Measures of effect size increase, but the likelihood of rejecting the null hypothesis decreases. c. There is little or no effect on measures of effect size, but the likelihood of rejecting the null hypothesis increases. d. There is little or no effect on measures of effect size, but the likelihood of rejecting the null hypothesis decreases.
Which of the following is associated with spending long hours in stressful employment for adolescents?
a. Better school and work habits b. Poor academic performance c. High self-esteem d. Increased conflict with parents
Ashley is an anorexic girl who has lost significant weight yet refuses to seek any treatment. This is a potentially life-threatening decision, as about ____ percent of adolescentsin her situation die of symptoms related to the eating disorder
a. 15 b. 25 c. 35 d. 45