One way to state the null hypothesis is to say that in the control groups posttest only design, _____
a. randomization was used
b. the two groups are equivalent at the beginning of data collection
c. the two groups are not equal at the end of the experiment
d. the groups means are equal
D
To say that the group means are equal is to say that they are NOT different. That says the same thing as the null hypothesis.
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Simon showed grammatical mastery for the rules of American Sign Language, even though his teachers (his parents and their friends) did not. This lends support for the idea that
a. there is no sensitive period for learning language. b. ASL cannot be taught to children after the age of 9. c. the tendency to acquire language is inborn. d. a child can learn grammatically incorrect ASL, even if the parents model correct usage.
Suppose you work on a submarine with only artificial light. You are required to follow a schedule of working for 12 hours and then sleeping for 6 . What rhythm, if any, will your alertness and body temperature show?
a. They will follow a rhythm of 18 hours b. They will follow the usual rhythm of 24 hours. c. They will follow a rhythm of 21 hours. d. They will cease to show any consistent rhythm.
Clack, Allen, Cooper, and Head examined the personality types of physicians and their patients and found that:
a. physicians were most concerned with establishing a warm relationship, whereas patients were more task-centered b. patients tended to see their physicians as caring, whereas physicians were actually uncaring c. all physicians were caring, whereas patients were all thinking types d. physicians tended to be thinking types, whereas patients were more likely to be feeling types
People with panic disorder often develop social phobia as a result of their panic attacks
Indicate whether this statement is true or false.