Maternal deprivation theory

What sampling method did Bowlby use in his study?

Opportunity sampling

How many juvenile thieves were included in Bowlby's Group 1?

44 juvenile thieves

What was the purpose of the interviews conducted by the social worker?

To gather information about early life experiences such as separation

What percentage of the thieves were classified as affectionless psychopaths?

14 out of 44 thieves, which is approximately 31.8%

How many of the affectionless psychopaths experienced prolonged separation from their mother?

12 out of 14 affectionless psychopaths

According to Maternal Deprivation Theory, what is the critical period for a mother's presence?

The first 2.5 years up to age 5

What does Bowlby's Law of accumulated separation suggest?

Every separation adds up and can lead to negative consequences

List two consequences of maternal deprivation according to Bowlby.

Affectionless psychopathy and delinquency

What is one limitation of Bowlby's 44 Thieves study?

It had no control group

What practical application arose from Bowlby's findings?

Extended maternity leave and improved care for vulnerable children

What did Lewis's study of 500 children find regarding early separation?

No link between early separation and later criminal behavior

What does the Czech twins case suggest about early deprivation?

Children can recover well despite severe early deprivation

What is Rutter's argument regarding affectionless psychopathy?

It results from failure to form an initial bond, not from breaking one

What major criticism is directed at Bowlby's interpretation of his study?

He may have shown unconscious researcher bias by interpreting evidence to fit his expectations

What are some cognitive effects of maternal deprivation mentioned by Bowlby?

Lower cognitive abilities

What future relationship problems can arise from maternal deprivation?

Problems in forming healthy future relationships (internal working model)