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(Jackson & Latane, 1981; Knowles, 1983). , , , , , . . , , , - (Mullen, 1986). (Sokoll & Munatt, 1984).
. , , , (Schiffenbauer & Schiavo, 1976; Storms & Thomas, 1977). , , (Jonathan Freedman, 1979, 1980) . , . , : , , (Aiello & others, 1983; Worchel & Brown, 1984).
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