The retinohypothalamic path to the SCN comes from a special population of retinal ganglion cells that have their own photopigment, called
a. circaopsin.
b. photopsin
c. rodopsin.
d. melanopsin.
Answer: d. melanopsin.
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Dr. Ford wants to test the hypothesis that room color can affect memory. To that end, he randomly assigns 10 students to a condition where they study a written passage while seated in a room that is painted a lilac color. The other 10 students study the passage while seated in an identical room that is painted bright orange. After both groups studied the passage for one hour, they are given a
multiple-choice test over the material. Dr. Ford then calculates how many questions the students in both groups answer correctly. In Dr. Ford’s study, a potential confounding variable is the ____. a. ?students’ test scores b. ?color of the room in which the students studied the passage c. ?age of the students d. ?random assignment to groups
Information from the cochlea travels to the brain along cranial nerve VIII.
Answer the following statement true (T) or false (F)
In It's In the Bag, the study of hypocrisy and condom use, the commitment manipulation involved
(a) wearing a T shirt with information about HIV printed on it (b) giving money to support research into HIV (c) telling at least three friends about HIV (d) making a videotape about HIV for use in high schools
An interaction effect in a two-way factorial design
A) is the effect of one variable that divides the groups, ignoring the influence of the other variable that divides the groups. B) occurs when the influence of one variable that divides the groups changes according to the level of the other variable that divides the groups. C) almost never occurs when more than one variable that divides the groups is considered at a time. D) is rare in a well-designed study, and usually indicates some error in computation.