Ch. 4

Question 1

Correlational study

Answer 1

A study in which the researcher does not control an independent variable but determines whether two variables are related to each other

Question 2

Experimental study

Answer 2

A study in which the researcher manipulates a condition (independent variable) that is expected to produce a change in the subject’s behavior (dependent variable)

Question 3

Theory

Answer 3

Integrated and interprets diverse observations in an attempt to explain a phenomenon

Question 4

EEG

Answer 4

Electroencephalogram, recorded from two electrodes on the scalp over the area of interest; electronic amplifier detects the combined electrical activity of all the neurons between the two electrodes

Question 5

TMS

Answer 5

Transcranial magnetic stimulation; noninvasive brain stimulation technique that uses a magnetic coil to induce a voltage in brain tissue

Question 6

Blood-brain barrier

Answer 6

The brain’s protection from toxic substances and neurotransmitters in the bloodstream; the small openings in the capillary walls prevent large molecules from passing through unless they are fat soluble or carried through by special transporters