Certificate In Psychology (CPSY) Practice Exam

Electroencephalography measures:

1. Galvanic skin response.

2. Heart rate.

3. Sucking rate.

4. Brain waves.

The correct answer is: Brain waves.

Electroencephalography (EEG) is a technique specifically designed to measure the electrical activity of the brain. It detects brain waves by placing electrodes on the scalp, which capture the electrical impulses that neurons generate when they communicate with one another. This method provides a direct reading of brain activity and is widely used in both clinical and research settings to diagnose conditions such as epilepsy, sleep disorders, and other neurological impairments. The other options represent different methods of measurement. Galvanic skin response involves assessing the electrical conductance of the skin, often used in psychology to observe emotional arousal. Heart rate measures the number of beats per minute and is commonly monitored in cardiovascular assessments. Sucking rate is a measure often used in developmental psychology to study infants’ responses but does not provide any information about brain activity. Therefore, the only correct option that aligns with the function of electroencephalography is the measurement of brain waves.