Harry Harlow
Overview
Harry Frederick Harlow was an American psychologist
Psychologist
Psychologist is a professional or academic title used by individuals who are either:* Clinical professionals who work with patients in a variety of therapeutic contexts .* Scientists conducting psychological research or teaching psychology in a college...

 best known for his maternal-separation and social isolation
Social isolation
Social isolation refers to a lack of contact with society for members of social species. There may be many causes and individuals in numerous generally social species are isolated at times, it need not be a pathological condition. In human society, in those cases where it is viewed as a pathology,...

 experiments on rhesus monkeys, which demonstrated the importance of care-giving and companionship in social and cognitive development. He conducted most of his research at the University of Wisconsin–Madison
University of Wisconsin–Madison
The University of Wisconsin–Madison is a public research university located in Madison, Wisconsin, United States. Founded in 1848, UW–Madison is the flagship campus of the University of Wisconsin System. It became a land-grant institution in 1866...

, where humanistic psychologist
Humanistic psychology
Humanistic psychology is a psychological perspective which rose to prominence in the mid-20th century, drawing on the work of early pioneers like Carl Rogers and the philosophies of existentialism and phenomenology...

 Abraham Maslow
Abraham Maslow
Abraham Harold Maslow was an American professor of psychology at Brandeis University, Brooklyn College, New School for Social Research and Columbia University who created Maslow's hierarchy of needs...

 worked for a time with him.

Harlow's experiments were controversial; they included rearing infant macaques in isolation chambers
Pit of despair
The pit of despair was a name used by American comparative psychologist Harry Harlow for a device he designed, technically called a vertical chamber apparatus, that he used in experiments on rhesus macaque monkeys at the University of Wisconsin–Madison in the 1970s. The aim of the research was to...

 for up to 24 months, from which they emerged severely disturbed.
 
x
OK