Alexia started a new job on monday morning. for the first three days, she showed up in bright colors and was outgoing and extroverted. however, on thursday, she showed up in a dark suit and appeared shy and introverted. she insisted that her name was clara, and she couldn’t understand why her coworkers kept calling her alexia. in this example, alexia is showing symptoms that are consistent with:
a. antisocial personality disorder.
b. disorganized schizophrenia.
c. bipolar disorder.
d. dissociative identity disorder.

Option D, dissociative identity disorder.

Explanation:

Dissociation occurs when a person's mind is unable to establish connections between his/her thoughts, emotions, memories, feelings, or even a sense of identity.

Dissociative identity disorder occurs when the person displays 2 or more personality states, each one with its age, sex or race.

Alexia suffers from this disorder, and "Clara" maybe her second personality, who is totally disconnected from Alexia's reality, and that is why she doesn't even remember who Alexia is.

as university of miami psychologists debra lieberman and adam smith pointed out in a recent article in the journal current directions in psychological science, humans have social and psychological mechanisms to deter incest. with very few exceptions, marriages between brothers and sisters and between parents and their children are verboten in every human culture. the primary psychological anti-incest mechanism is the yuck response. even the idea of sex with their mom or dad, bro or sis is upsetting to most people. the psychologist jonathan haidt has found that nearly everyone is repelled by the prospect of brother-sister sex, even in hypothetical situations in which there is no chance of pregnancy).

the biological cost of incest

this raises an interesting question: just what’s so bad about incest? sure, having sex with your dad or your sister seems gross — but why? some anthropologists have argued that incest taboos are learned social conventions. this explanation, however, doesn’t make sense to me as it does not explain the widespread existence of anti-incest mechanisms in creatures ranging from cockroaches to chimpanzees. second, the incest taboo is about as close to a universal law as human moral rules get.

why should mechanisms to avoid incest be so widespread both in nature and across human societies? the answer is simple. the problem with having sex close with relatives is that there is an astonishingly high chance that your offspring will be born with a serious birth defect.

it is a better alternative