A chemical substance that circulates throughout the brain and travels a relatively long

distance to influence the activity of neurons is called a(n)

a. neurotransmitter.
b. synaptic ion.
c. neuromodulator.
d. enzyme.
e. neuroeffector.

c. neuromodulator.

Psychology

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Jody is 8 years old. She has trouble organizing her work and often loses the things she needs in order to complete projects, such as the directions, pencils, and books. Which dimension of ADHD does this represent?

a. Lack of attention b. Hyperactivity c. Impulsivity d. Belligerence

Psychology

The captain of a small fishing boat complains that on exceptionally clear days distances are harder to judge. This is probably due to the loss of which depth cue?

a. accommodation b. relative size c. aerial perspective d. convergence

Psychology