Abnormal Psychology

(やまだぃちぅ) #1

52 CHAPTER 2


Receiving frequent punishments or negative criticisms is associated with
depression in some people: Over time, some individuals who experience such aver-
sive events eventually give up trying to avoid or escape them and become depressed.
Martin Seligman and his colleagues suggested that this giving up is learned through
operant conditioning (Miller & Seligman, 1973, 1975). The process appears analo-
gous to what happens to animals in similar circumstances. Consider a classic study
by Overmier and Seligman (1967): When caged dogs were electrically shocked, at
fi rst they would respond to the shocks, trying to escape in order to avoid them. But
when they could not escape the continued shocks, they eventually stopped responding
and simply endured, huddling on the fl oor. Even after they were put in a new cage in
which they could easily avoid the shocks, they remained on the fl oor. This phenom-
enon is called learned helplessness: In an aversive situation where it seems that no
action can be effective, the animal stops trying to escape (Mikulincer, 1994). Learned
helplessness may also occur in humans, and is considered to underlie certain types
of depression. For example, sometimes people are emotionally abused—continually
criticized, humiliated, and belittled—and no matter how hard they try to be “better”
(and so prevent the abuse), the emotional abuse continues. When people in such a sit-
uation give up trying, they may become depressed and become vulnerable to a variety
of stress-related problems.

FEEDBACK LOOPS IN ACTION: Classical Conditioning and Operant
Conditioning Revisited
Classical conditioning and operant conditioning involve neurological factors: the
underlying brain mechanisms that pair stimuli in the case of classical conditioning,
and the underlying brain mechanisms for reward and punishment in the case of
operant conditioning. And based on temperament (an-
other neurological factor, which we’ll discuss shortly),
people who are more emotionally reactive are more
likely to develop conditioned emotional responses than
are others (Bienvenu et al., 2001). Social factors can also
contribute to maladaptive learning: The presence of oth-
ers or emotional responses from others can serve as rein-
forcement or punishment (Kringelbach, Aranjo, & Rolls,
2001), leading people to behave in maladaptive ways.
For example, if a parent punishes a child in some way
(even through facial expressions) for playing with an-
other child, that punished child may grow up to feel that
it is somehow “wrong” to enjoy others’ company and
come to avoid others when possible. Similarly, a specifi c
individual, such as a punitive relative, can become a con-
ditioned stimulus, eliciting fear.
Let’s suppose that a student gave a presentation that
didn’t go well and some classmates snickered during one
part (social factor). Let’s also suppose that this student had an inherited vulnerabil-
ity (a neurological factor; Biederman et al., 2001; Kagan, 1989) that increased his
or her risk of developing a conditioned emotional response—in this case, to making
presentations (Mineka & Zinbarg, 1995). And let’s further suppose that the student
developed negative, irrational thoughts about public speaking (psychological factor;
Abbott & Rapee, 2004; Antony & Barlow, 2002). The neurological factors and social
factors may increase the likelihood that the student will develop a social phobia—an
intense fear of public humiliation or embarrassment, accompanied by an avoidance of
social situations likely to elicit this fear.

Observational Learning
Not all learning involves directly experiencing the associations that underlie classi-
cal and operant conditioning. Observational learning (also referred to as modeling)

People who are uncomfortable in particular social
situations may leave such situations as early as
possible; this early departure is negatively rein-
forced because, once they leave, they no longer
feel uncomfortable. Such negative reinforcement
of social anxiety can contribute to a psychologi-
cal disorder called social phobia—unreasonable
anxiety or fear in social situations (American
Psychiatric Association, 2000).

Learned helplessness
The state of “giving up” that arises when an
animal is in an aversive situation where it
seems that no action can be effective.

Observational learning
The process of learning through watching
what happens to others; also referred to as
modeling.

P S

N

Getty Images

Free download pdf