E N D
1. 1 ?????? ????????
2. 2 ??????.... ??????...Gaskin & Smith (1997) ???? ????? ???? ?????? ?????? ??? ??:
???? ??????????? ?????? ?? ??????? ???? ???????.
????? ????? ??????? ???? ????, ???? ???????????.
???? ?????? ?? ??????? ??? 45-54.
?????? ?? ???? ???? ??????? ???? ???? ??????, ??????, ?????? ???????.
???? ?????? ?????? ??????? ????
?? ???????? ??????? ??? 5-10 ???? ?????.
3. 3