If pregnancy does not occur, the corpus luteum shrinks, and the ________.
A. blastocyst forms a membrane called the amnion
B. one-celled zygote multiplies and forms a blastocyst
C. germinal period begins
D. lining of the uterus is discarded
Answer: D
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Birth control pills prevent pregnancy by ____
a. increasing the release of estrogen b. increasing the release of FSH c. interfering with the feedback cycle between the ovaries and the pituitary d. inactivating both ovaries
Which of the following BEST describes the importance to psychology of Herman von Helmholtz's 19th-century studies of reaction time?
A. They demonstrated that mental processes can be studied scientifically. B. They demonstrated the benefits of introspection to psychological study. C. They proved the necessity of reaction times in cognition. D. They demonstrated the link between brain and mind.
Children's television programs contain less violence than that found in other types of television programs.
Answer the following statement true (T) or false (F)
A mother turns on the radio right before she feeds her toddler each evening. After a few days, the child begins to open his mouth and hold out his spoon as soon as the mother turns on the radio. What is the radio in this example?
a) conditioned stimulus b) conditioned response c) unconditioned stimulus d) unconditioned response