Developmental Psychology

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Denise Daniel
AP Psychology
10/8
Developmental Psychologist
Mary Ainsworh was born in Glendale Ohio in 1913 and she was the oldest of three girls. (McLeod 2008) When Mary was five years old she moved to Canada. At fifteen Ainsworth read William McDougall’s “ Character and conduct of life” which inspired her to choose a career in Psychology. Later on in life she attended the University of Toronto where she was one out of four to complete with an honors degree in psychology in 1929. (McLeod 2008) William E. Blatz’s work on child development sparked her interest and agreed to write her dissertation with his theory. After she was done with college she then joined the Canadian Women's Army Corps in 1942(McLeod 2008). In 1950 she married Leonard Ainsworth, but married only lasted ten years ending in 1960. The end of her marriage led her to depression and she need long term psychological therapy. In 1963 Ainsworth became a full time professor after one year beginning the research that she is now famous for. (McLeod 2008) Twenty years, in 1975, later she left for another position in West Virginia where stay is until her retirement in 1984. Ainsworth then died at the age of 86 in 1999. (McLeod 2008)

Mary Ainsworth is most famous for her theory of attachment. She begin her major study in 1970. Ainsworth came up with an assessment that explained how attachment might vary between children, called strange situation classification, SSC. Through her experiments using SSC she was able to find three distinct styles of attachment that included one of secure attachment and the other two insecure attachments; she then identified these attachments as: Secure, avoidant, and resistant. 70% of infants have secure attachment. When dealing with separation anxiety the infant will feel distressed when the mother leaves. When dealing with stranger anxiety the infant will be avoidant of strangers when alone but friendly when the mother is around. Lastly when dealing with reunion behavior the infant will positively and happily return to their mother. 15% of infants have resistance attachment. When dealing with separation anxiety the will show signs of intense distress when the mother is not around. When dealing with stranger anxiety the infant will avoid strangers and show fear towards them. Infants dealing with reunion behavior will approach mother but show resistance. And the 15% have avoidance attachment. Dealing with separation anxiety, the infant will show no sign of distress with the mother is not around. When dealing with stranger anxiety the infant will be okay with the stranger and plays normally with the stranger present. Finally when dealing with reunion behavior the infant will show little interest that the mother has returned. She suggested that the type of attachment a child will have depends on the behavior of the primary career. Her findings provided the first empirical evidence for the “Bowlby’s attachment theory. Albert Bandura was born in Canada in 1925. Bandura received his Bachelor's degree from the University of the British Columbia. Then in 1952 he received his PhD from the University of Iowa. While at the the University of Iowa, Bandura began to develop his theory of social learning. In 1953, he accepted a position as a psychology professor at the University of Stanford, where he is still employed. Bandura received an achievement award from the American Psychology Association and also a scientist award from the California State Psychological Association. He was elected, in 1980, to become the president of the Western Psychological Association. In 1989 Albert was employed at the Institute of Medicine of the National Academy of Science. He has written several books and articles that have been used for many psychology research. Bandura is most famous for his "Bobo Doll Experiment." Albert is also famous of the theory of social learning; Which is most relevant in criminology. The theory states that one's environment causes one's...
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