Alejandra, a resident of lower Manhattan, suffers from PTSD after witnessing the attack on the twin towers of the World Trade Center on September 11, 2001. A certain acrid burning smell can trigger intense feelings of jitteriness and distress for her. This is an example of ____.
a. positive reinforcement
b. operant conditioning
c. classical conditioning
d. observational learning
Question 2
Jake, a veteran of the Iraq war, witnessed his friends being severely injured or killed on two tours of duty. He came home physically healthy but suffering from PTSD. Jake was not much of a drinker before he went to Iraq, but now, he frequently drinks alone at night. To what might this be related?
a. excessive levels of naturally occurring benzodiazepine activity in the frontal cortex
b. lower levels of naturally occurring benzodiazepine activity in the frontal cortex
c. excessive levels of naturally occurring benzodiazepine activity in the hippocampus
d. lower levels of naturally occurring benzodiazepine activity in the hippocampus
4.1 Age changes in total IQ based on cross-sectional data (lower line) and longitudinal data ...
Changes in bronchioles during an asthma attack: (a) normal bronchiole; (b) asthmatic bronchiole.
Man-in-the-middle attack
Testing the arterial supply to the lower extremities
The Upper (A) and Lower (B) Respiratory Tracts (1 of 2)
Manhattan plots resulting from a genome-wide association study of seven common human disease