In order for an embryo to construct testes, that embryo must have at least _____ at conception.
A. one X chromosome
B. two X chromosomes
C. one Y chromosome
D. two Y chromosomes
Answer: C
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Which theory explains negative color afterimages?
a. Opponent-process theory b. Retinex theory c. Trichromatic theory d. String theory
The Gardners' chimpanzee, Washoe, learned to communicate in what way?
a. By imitating human sounds b. By barking sounds at various rhythms c. By sign language d. By eye movements
Dr. Manquero forms the hypothesis that ingesting chocolate prior to an exam will improve exam performance. She gives half of her participants chocolate and the other half gum. She then gives the participants an exam. In this experiment, what is the dependent variable?
a. the group that chews gum c. the group that eats chocolate b. the performance on the exam d. whether they eat chocolate or chew gum
The fact that children __________ provides evidence that Freud's account of conscience development is inaccurate
A) whose parents frequently use threats or physical force tend to feel little guilt following transgressions B) whose parents frequently use threats or physical force tend to feel overwhelming guilt when they violate standards C) who feel little guilt frequently have loving and nurturing parents D) who grow up in abusive households tend to violate standards infrequently