Hidalgo, eight, is very good at addition and subtraction, but he has a hard time understanding the complex algebraic problems that his 14-year-old sister does. Hidalgo is currently in which of Jean Piaget's stages of development?
A. conceptual operational
B. formal operational
C. preoperational
D. concrete operational
Answer: D
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The fact that an infant's perception of a stimulus is best if it stimulates more than one sense simultaneously is best described as a. SIDS
b. differentiation. c. intersensory redundancy. d. theory of mind.
To investigate the effects of a new drug for hyperactivity, one group of children is given this new drug, while the other group is given a placebo. The researcher labels the drug and placebo will letter names and then has his assistant administer the pills and collect the data. Neither the research assistant nor the children will known who is getting the placebo and who is getting the new drug
until the end of the experiment. This researcher is using a a. double-blind experiment to minimize research participant bias and researcher bias. b. single-blind experiment to minimize observer bias and the observer effect. c. natural experiment that incorporates random selection and random assignment. d. placebo effect to maximize the self-fulfilling prophecy.
Your best friend has just learned that she is pregnant. She is a healthy person and is planning on engaging in aerobic exercise during her pregnancy. What would be your advice to her? She should ____
a. be very careful in that this type of exercise during pregnancy could lower muscle mass b. not run too quickly in that it could dangerously increase fetal heart rate c. exercise regularly since it will stop dangerous teratogens from reaching the fetus d. exercise regularly in that she will increase her ability to process oxygen
Which of the following statements is true about graduates of the Carolina Abecedarian Project?
A) Treatment children sustained their IQ advantage until last tested at age 21. B) Graduates of the school-age intervention maintained an IQ advantage only through middle school. C) Interventions during infancy were not especially effective in boosting graduates' mental development. D) Treatment children lost their IQ advantage during adolescence.