The document discusses several models for defining normal and abnormal behavior: - The medical model views abnormal behavior as caused by organic pathology and disturbances in thought, perception, or psychomotor activities. - The statistical model analyzes responses on tests and defines abnormality as deviations more than two standard deviations from the mean. - The socio-cultural model defines normalcy based on a society's beliefs, norms, values, and views breaking these as abnormal behavior.

3. CONCEPT…
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• Psychiatry as evident from the above is
concerned with abnormal behavior in its
broadest sense, but defining the concepts of
normal & abnormal behavior as such has been
found to be difficult.
• These concepts are much under the influence
of socio-cultural factors.
• Several models have been put forward in order
to explain the concept of normal & abnormal
behavior

4. Medical Model…
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• Medical model considers organic
pathology as the definite cause
for mental disorder.
• According to this model
abnormal people are the ones who have
disturbances in thought, perception &
psychomotor activities.
• These normal are the ones who are free from
these disturbances.

5. Statistical Model…
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6. Statistical Model…
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• It involves the analysis of responses on a test or
questionnaire or observations of some
particular behavior variables.
• The degree of deviation from the standard
norms arrived at statistically, characterizes the
degree of abnormality.
• Statistically normal mental health falls within
two standard deviations (SDs) of the normal
distractions curve.

7. Socio-cultural Model…
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8. Socio-cultural Model…
 The beliefs, norms, taboos & values of a society
have to be accepted & adopted by individuals.
 Breaking any of these would be considered as
abnormal.
 Normalcy is defined in context with social
norms prescribed by the culture.
 Thus cultural background has taken into account
when distinguishing between normal & abnormal
behavior.
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9. Behavioral Model…
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• Behavior that is adaptive, is normal,
maladaptive is abnormal.
• Abnormal behavior is a set of faulty behavios
acquired through learning.

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