In the late teens, the brain actively destroys unneeded connections, especially in the frontal lobes,
with this pruning
of synapses sharpening the brain's capacity for
a. sensory capabilities.
b. language comprehension.
c. abstract thinking.
d. intuitive thinking.
ANSWER: c
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A sample of 100 people is classified by gender (male/female) and by whether they are registered voters. The sample consists of 80 females and 20 males, and has a total of 60 registered voters. If these data were used for a chi-square test for independence, what is the expected frequency for males who are registered voters?
a. 12 b. 20 c. 40 d. Cannot determine without additional information
Which statement is a characteristic of Skinner's teaching machines?
A) It provided monetary reinforcement for each question answered correctly. B) It increased the difficulty of questions based on students' reaction times. C) It provided immediate feedback as to whether the question was answered correctly or incorrectly. D) It decreased the difficulty of the next question if the previous question was answered correctly.
You buy a new car that always starts instantly on cold mornings (continuous reinforcement). It suddenly fails one time, and you immediately call a service station. Suppose, however, that your car often gives you trouble on cold mornings (variable reinforcement). It is likely that you will try to start the car several times before calling a service station due to the __________ effect.
A. partial reinforcement B. successive approximation C. secondary reinforcement D. delayed reinforcement
Who would have the most difficulty ignoring distractors and irrelevant stimuli?
A. Amber, who is 35 and teaching a second grade class at a large inner city school B. Cael, who is 45 and editing a manuscript on a tight deadline at a publishing firm C. Lucy, who is 55 and teaching an exceptionally large yoga class at a local wellness center D. Roger, who is 65 and working on a crossword puzzle near the children's play area in a restaurant