Which of the following is true regarding the participant-variable design?
a. The independent variables used in the design are always demographic variables.
b. The independent variables always involve pre-existing personality characteristics of the participants.
c. Because the participant variable is measured, causal conclusions about the effect of the participant variable on the dependent variable are difficult to draw.
d. Because the participant variable can be manipulated, causal conclusions can frequently be made.
Question 2
A study that assesses how a patient with a leg fracture responds to a new physical therapy program is an example of a
a. participant-variable design.
b. time-series design.
c. single-participant design.
d. cross-sectional design.
An example of a homeostatically controlled variable: blood levels of glucose in a human.
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School-age children are often independent and industrious, with a developing sense of self-confidenc
Negative feedback control of a regulated variable.
Variable Gases: Carbon Dioxide
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