za studente psihologije - Asch & Harlow

The Asch Conformilty Experiments

Do you think of yourself as a conformist or a non-conformist? If you are like most people, you probably believe that you are non-conformist enough to stand up to a group when you know you are right, but conformist enough to blend in with the rest of your peers.
Imagine yourself in this situation: You've signed up to participate in a psychology experiment in which you are asked to complete a vision test. Seated in a room with the other participants, you are shown a line segment and then asked to choose the matching line from a group three segments of different lengths. The experimenter asks each participant individually to select the matching line segment. On some occasions everyone in the group chooses the correct line, but occasionally, the other participants unanimously declare that a different line is actually the correct match.
So what do you do when the experimenter asks you which line is the right match? Do you go with your initial response, or do you choose to conform to the rest of the group?
What Were the Asch Conformity Experiments?:
In psychological terms, conformity refers to an individual's tendency to follow the unspoken rules or behaviors of the social group to which he or she belongs. Researchers have long been interested in the degree to which people follow or rebel against social norms. During the 1950s, psychologist Solomon Asch conducted a series of experiments designed to demonstrate the powers of conformity in groups.
In Asch's experiments, students were told that they were participating in a 'vision test.' Unbeknownst to the subject, the other participants in the experiment were all confederates, or assistants of the experimenter. At first, the confederates answered the questions correctly, but eventually began providing incorrect answers.
Results of the Asch Conformity Experiments:
Nearly 75 percent of the participants in the conformity experiments went along with the rest of the group at least one time. After combining the trials, the results indicated that participants conformed to the incorrect group answer approximately one-third of the time. In order to ensure that participants were able to accurately gauge the length of the lines, participants were asked to individually write down the correct match. According to these results, participants were very accurate in their line judgments, choosing the correct answer 98 percent of the time.
The experiments also looked at how the number of group members impacts conformity. When just one other confederate was present, there was virtually no impact on participants' answers. The presence of two confederates had only a tiny effect. The level of conformity seen with three or more confederates was far more significant.
Asch also found that having one of the confederates give the correct answer while the rest of the confederates gave the incorrect answer dramatically lowered conformity. In this situation, just five to ten percent of the participants conformed to the rest of the group. Later studies have also supported this finding (Morris & Miller, 1975), suggesting that having social support is an important tool in combating conformity.
What Do the Results of the Asch Conformity Experiments Indicate?:
At the conclusion of the experiments, participants were asked why they had gone along with the rest of the group. In most cases, the students stated that while they knew the rest of the group was wrong, they did not want to risk facing ridicule. A few of the participants suggested that they actually believed the other members of the group were correct in their answers.
These results suggest that conformity can be influence both by a need to fit in and a belief that other people are smarter or better informed. Given the level of conformity seen in Asch's experiments, conformity can be even stronger in real-life situations where stimuli are more ambiguous or more difficult to judge.
Criticisms of the Asch Conformity Experiments
One of the major criticism centers on the reasons why participants choose to conform. According to some critics, individuals may have actually been motivated to avoid conflict, rather than an actual desire to conform to the rest of the group.
Another criticism is that the results of the experiment in the lab may not generalize to real world situations. However, many social psychology experts believe that while real-world situations may not be as clear cut as they are in the lab, the actual social pressure to conform is probably much greater, which can dramatically increase conforming behaviors.
Contribution to Psychology
The Asch conformity experiments are among the most famous in psychology's history and have inspired a wealth of additional research on conformity and group behavior.




Harry Harlow and the Nature of Love


During the first half of the 20th century, many psychologists believed that showing affection towards children was merely a sentimental gesture that served no real purpose. Behaviorist John B. Watson once even went so far as to warn parents, "When you are tempted to pet your child, remember that mother love is a dangerous instrument." According to many thinkers of the day, affection would only spread diseases and lead to adult psychological problems.
During this time, psychologists were motivated to prove their field as a rigorous science. The behaviorist movement dominated psychology and urged researchers to study only observable and measurable behaviors. An American psychologist named Harry Harlow, however, became interested in studying a topic that was not so easy to quantify and measure: love.
In a series of controversial experiments conducted in 1960s, Harlow demonstrated the powerful effects of love. By showing the devastating effects of deprivation on young rhesus monkeys, Harlow revealed the importance of a mother's love for healthy childhood development. His experiments were often unethical and shockingly cruel, yet they uncovered fundamental truths that have heavily influenced our understanding of child development.

The Wire Mother Experiment:

Harlow noted that very little attention had been devoted to the experimental research of love. "Because of the dearth of experimentation, theories about the fundamental nature of affection have evolved at the level of observation, intuition, and discerning guesswork, whether these have been proposed by psychologists, sociologists, anthropologists, physicians, or psychoanalyst," he noted (Harlow, 1958).
Many of the existing theories of love centered on the idea that the earliest attachment between a mother and child was merely a means for the child to obtain food, relieve thirst, and avoid pain. Harlow, however, believed that this behavioral view of mother-child attachment was an inadequate explanation.
Harlow’s most famous experiment involved giving young rhesus monkeys a choice between two different “mothers.” One was made of soft terrycloth, but provided no food. The other was made of wire, but provided food from an attached baby bottle.
Harlow removed young monkeys from their natural mothers a few hours after birth and left them to be "raised" by these mother surrogates. The experiment demonstrated that the baby monkeys spent significantly more time with their cloth mother than with their wire mother. “These data make it obvious that contact comfort is a variable of overwhelming importance in the development of affectional response, whereas lactation is a variable of negligible importance,” Harlow explained (1958).

Fear, Security, and Attachment:

In a later experiment, Harlow demonstrated that young monkeys would also turn to their cloth surrogate mother for comfort and security. Using a strange situation similar to the one created by attachment researcher Mary Ainsworth, Harlow allowed the young monkeys to explore a room either in the presence of their surrogate mother or in her absence. Monkeys in the presence of their mother would use her as a secure base to explore the room.
When the surrogate mothers were removed from the room, the effects were dramatic. The young monkeys no longer had their secure base to explore the room and would often freeze up, crouch, rock, scream, and cry.

The Impact of Harlow’s Research:

While many experts derided the importance of parental love and affection, Harlow’s experiments offered irrefutable proof that love is vital for normal childhood development. Additional experiments by Harlow revealed the long-term devastation caused by deprivation, leading to profound psychological and emotional distress and even death. Harlow’s work, as well as important research by psychologists John Bowlby and Mary Ainsworth, helped influence key changes in how orphanages, adoption agencies, social services groups and child care providers approached the care of children.
While Harry Harlow's work led to acclaim and generated a wealth of research on love, affection, and interpersonal relationships, his own personal life soon began to crumble. After the terminal illness of his wife, he became engulfed by alcoholism and depression, eventually becoming estranged from his own children. Colleagues frequently described him as sarcastic, mean-spirited, misanthropic, chauvinistic, and cruel. Yet Harlow's enduring legacy reinforced the importance of emotional support, affection, and love in the development of children.