Define a covariate, and indicate how it can be used in an experimental design. What are the advantages and disadvantages of including a covariate in the experimental design?
What will be an ideal response?
Answer may vary
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Holmes and Rahe created an instrument called the Social Readjustment Rating Scale (SRRS) to measure life change events. In their model of stress, higher life change event scores for the last six months to a year indicate a person has a greater likelihood of ____. a. suicidal behavior c. living a shorter lifespan b. developing an illness d. pessimism
Fill in the blank(s) with correct word
Taking a folic acid supplement around the time of conception reduces by more than 70 percent
A) the risk of miscarriage. B) infantile hypothyroidism. C) the risk of Down syndrome. D) abnormalities of the neural tube.
Which model fails to account for the fact that different people will exhibit divergent symptoms of the same illness?
a. biopsychosocial b. sociological c. psychological d. biomedical
After taking many different types of classes in college, Sarah has finally decided to become a mechanical engineer. She is actively planning for graduate school and a job in her chosen field. According to Marcia, which identity does Sarah exhibit?
a. Moratorium b. Foreclosure c. Diffusion d. Achievement