Measurements: Social skills were measured by using a
Behavioral Observation Assessment Sheet (BOAS)
developed by Omar [31]. The Arabic version of BOAS
proved to be valid. It was also reliable using a test -retest
method (r = .77) as it was established by the same
researcher in his study in 1993 for the conduction of
his doctorate thesis. The observational sheet covering
3 groups of social skills as follows: Conversation skills:
They include initiation and maintaining of conversation
skills meaning the ability of the person to initiate a
conversation with others and continue in conversation
using the following skills: -giving information, asking
question and listening. Ending conversation skills, the
ability of the individual to terminate conversation properly
are also included.