Solution :
Professor Jeffrey A Gray and Hans J. Eysenck recommended their effective theories on the biological grounds of personal traits.
The biopsychological concept of a personality is represented by the common biological processes that relates to the human behavior, attitude and psychology.
Jeffrey Alan Gray recommended the model which is a well appointed by the successive study and it has a popular endorsement among the experts in psychology. Hans J. Eysenck refers to the theories of psychoticism, extraversion traits and neuroticism. He discusses that people inherent a model that influences the people ability to find out and also to accommodate to the atmosphere. Jeffrey A Gray suggests that to practice a new revolved center line of distress as well as impulsivity.
A theorist i will like to identify is Jean Piaget, who was the brain behind Jean Piaget's theory.
Jean Piaget's theory can be regarded as cognitive development which focus on the stages of mental development that children pass through.
This theory encompass how knowledge is been acquired by children as well as their understanding of the nature of intelligence.
These stages involves in this theory are;
Therefore, this theory focused on mental development looking from biological perspective.
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