$1.)($a$)$ What is the general motor ability hypothesis and what does it assume? $($b$)$ Give an example of research investigating the general motor ability hypothesis.

$2.)($a$)$ Name and describe three perceptual motor abilities and three physical proficiency abilities identified by Fleishman. $($b$)$ How can the assessment of motor abilities be used to assess a person's present or future capability to perform specific motor skills needed particular jobs or professions?