It established that food was not necessarily a predominant need for the baby, but it sought a mother's warmth more than food. Thus reinforcing the idea of maternal love being the most important aspect in a baby's life.
The cloth mother was not an adequate alternative to a real mother, the monkeys rasied without contact with other monkeys showed abnormal behaviour in social behaviuors. They neglected and abused their own infants which shows that a bond with the mother is necessary for further social development.
Harlow and Harlow’s experiments provide convincing evidence to support Bowlby’s maternal deprivation hypothesis; however the results of this experiment cannot be applied to human behaviour because even though monkeys are our closest relative human beings are far more complex and have different needs.
44 thieves –main evidence to support bowlby’s own theory
to see whether frequent early separations were associated with a risk of behavioural disorders: in particular, a disorder termed "affectionless psychopathy". Bowlby used this term to describe individuals who have no sense of shame or guilt; they lack a social conscience.
- Bowlby found that a large number (86%) of those thieves diagnosed as affectionless psychopaths had experienced "early and prolonged separations from their mothers".
- Only 17% of the other thieves (the ones who weren't classed as affectionless psychopaths) had experienced such separations
- Even fewer (4%) of the control group ("non-thieves") had experienced frequent early separation
- These findings suggest a link between early separations and later social and emotional maladjustment
- In its most severe form, maternal deprivation appears to lead to affectionless psychopthy. In its less severe form it leads to antisocial behaviour (theft)
- These findings support the maternal deprivation hypothesis
- The evidence is correlational, which means that we can only say that deprivation/separation and affectionless psychopathy are linked, not that one caused the other
- The data on separation were collected retrospectively and may not be reliable. Parents may not have accurately recalled separations during infancy.
Not able to determine cause and effect
DEMAND CHARACTERISTICS – saying something to please the interviewer – especially parents – good excuse for having delinquent son
Rutter has a lot of criticism for the study.
Bowlby thought relationships you formed with primary caregiver when you were a baby formed a template for all future relationships. Sroufe summers camp study showed that when children where assed by the SSC at a young age they showed similar behaviors ten years later. Secure attachment =happy sociable child, Ambivalent and avoidant = insecure, unsociable child.
Hazan + Shaver thought that attachment style in infancy also shaped later romantic relationships. Interestingly, when Ainsworth, Blehar, Waters, and Wall (1978) classified attachment styles of toddlers (using the "strange situation), they found approximately the same percentages of each type of attachment that Hazan and Shaver found in adults. Possibly the attachment style that we adopt early in life stays with us throughout our entire lives. Our earliest attachments with our caretakers may set the pattern for all of our other attachments!
Privation studies
Genie- supports Bolwbys theory
Genie wasn't taught to speak, and was denied normal human interaction.
The case of Genie, and the difficulties she faced in learning to speak, are widely quote as evidence for the .
Recovery is possible – Koluchova twins-
The Koluchová twins lost their mother shortly after birth, and were cared for by a social agency for a year, and then fostered by a maternal aunt for a further six months. Their development was normal.
A cruel stepmother
Their father remarried, but his new wife proved to be excessively cruel to the twins, banishing them to the cellar for the next five and a half years and beating them from time to time. The father (who was quite possibly of limited intellectual ability) was for most of the time absent from home because of his job, and the economic condition of the family was far below the average low-working classes.
Restricted growth and development
On discovery at the age of seven the Koluchová twins were dwarfed in stature, lacking speech, suffering from rickets and did not understand the meaning of pictures. The doctors who examined them confidently predicted permanent physical and mental handicap.
Return to normality for the Koluchová twins
Removed from their parents, the Koluchová twins first underwent a programme of physical remediation, and entered a school for children with severe learning disabilities. After some time, the boys were legally adopted by exceptionally dedicated women. Scholastically, from a state of profound disability they caught up with age peers and achieved emotional and intellectual normality. After basic education they went on to technical school, training as typewriter mechanics, but later undertook further education, specialising in electronics. Both were drafted for national service, and later married and had children. They are said to be entirely stable, lacking abnormalities and enjoying warm relationships. One is a computer technician and the other a technical training instructor.
Case studies do not provide evidence that can be applied to he total population