GRE Psychology: Questions 383 - 386 of 437

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Question number: 383

» Behavioral Neuroscience » Sensory Structures and Processes

MCQ▾

Question

When a neural impulse reaches the tip of the axon terminal

Choices

Choice (4) Response
a.

the synaptic end bulb sends an electrical current into the dendrites of the next neuron

b.

the synaptic end bulb locks into the receptor sites on the post-synaptic dendrites

c.

synaptic vesicles in the synaptic end bulb release neurotransmitters that cross the synaptic cleft and lock into receptor sites on the post-synaptic neuron

d.

synaptic bulb fires

Question number: 384

» Measurement and Methodology » Statistical Procedures

MCQ▾

Question

A researcher has performed an experiment with a random sample. He wants to test his results for statistical significance and then draw conclusions about his population. He should use which of the following type of statistics?

Choices

Choice (4) Response
a.

Inferential statistics

b.

Correlations

c.

Referential statistics

d.

Frequency distributions

Question number: 385

» Learning » Theories, Applications and Issues

MCQ▾

Question

As a father feeds his baby, he smiles and babbles encouragingly. The father’s babbling could be considered

Choices

Choice (4) Response
a.

contiguity learning

b.

secondary reinforcement

c.

classical conditioning

d.

operant conditioning

Question number: 386

» Sensation and Perception » Psychophysics, Signal Detection

MCQ▾

Question

In a laboratory experiment, subjects wear headphones and are tested individually. Each of 500 subjects is presented first with a light and then possibly with a low-intensity tone in the earphones. Subjects are instructed to push a button if they hear a tone. Subjects are rewarded with $10 for each hit. In 500 trials, 200 times a tone was presented, and 300 times a tone was not presented. One hundred and ninety tones were detected. Also, the button was pressed 270 times in response to no tone.

Which of the following statements about the above experiment is in line with signal detection theory?

Choices

Choice (4) Response
a.

The reward for hits probably caused the high number of false alarms.

b.

The tone and the light were probably not effectively paired because the tone only followed the light in 200 of the 500 trails.

c.

Some subjects might have been distracted by the experiment design which called on visual and auditory sensory systems.

d.

Subjects were unable to detect at least a few tones because some tones were not a just noticeable difference from the previously presented tones.

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