If you were to observe the development of psychomotor abilities in infants across cultures, you would find the most similarities in the
a. ages at which each ability appears.
b. child-rearing practices used to foster development.
c. sequence in which abilities appear.
d. relationship between intellectual and psychomotor development.
C
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Which of the following is a reason the embryonic period is the most vulnerable period of development?
A. Nearly two-thirds of embryos fail to complete development, resulting in miscarriages. B. Brain development is nearly complete by the end of the embryonic period and thus vulnerable only at this time. C. It is when all of the major organs and body parts develop in rudimentary form and are potentially sensitive to environmental toxins. D. The embryo is small and weak and unable to resist toxins in the mother's body.
When Bob plays cards with his friends, he finds that his winning hands seem to come in bunches. Then, he may go as many as 10 hands without winning anything. Which schedule best describes the reinforcement Bob receives when playing cards?
A. fixed ratio B. fixed interval C. variable ratio D. variable interval
Dr. Jones systematically varies the temperature in the laboratory (70, 80, and 90 degrees Fahrenheit) while holding other variables constant, and observes that the participants' activity level decreases as the temperature increases. This illustrates ____
a. a non-causal relationship between temperature and activity level b. a causal relationship between temperature and activity level c. no relationship between temperature and activity level d. a nonsystematic relationship between temperature and activity level
Recent research has confirmed Piaget's belief that children are egocentric through the entire preoperational stage
Indicate whether this statement is true or false.