[أسيل رزق]

How did psychology broke away (Overcome) from obstacles ?

How did psychologists recovered to the 10 obstacles ?

<<1>>

I.Similarity: They are similarity between people .

They are using " qualitative " in their studies

II.Difference : There are difference between people.

By direct deal between people (normal curve).

They are using " quantitative " in their studies.

<<2>>

.Mathematics : By using " representative sample " and Overcome the discrepancy

An Animal helps Psychologists in recovered the 10 obstacles by doing many experiments
Or
An Animal helps Psychologists in the exclusion of 10 Obstacles by doing many experiments

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