The average human cell has ____ chromosomes
23
46
78
96
46
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Having an infant with Down syndrome is more common if __________ is older.
A. the mother, but not the father, B. the father, but not the mother, C. more than one sibling D. the mother or the father
A child who plays games on an iPad by touching the screen now tries to control the picture on a TV by touching the screen. This is an example of what?
a. Discrimination b. Stimulus generalization c. Dishabituation d. The disequilibrium principle
Helmholtz's work included the first systematic experimental demonstration of the sensory threshold
a. True b. False
Regarding social phobias, which of the following statements is FALSE?
a. Less than one percent of all adults are affected by social phobias in a given year. b. It is common for people with social phobias to have uncomfortable physical symptoms, such as sweating, hands shaking, mental confusion, and blushing when in social situations. c. People with social phobias avoid social situations, such as eating or writing in public or using public rest rooms. d. Social phobias greatly impair a person's ability to work, attend school, or form personal relationships.