“…There has been, however, comparatively less research on the pre-addiction behaviour and activities of drug abusers. These include troubles with school authorities, such as discipline and truancy (Crawshaw and Mullen, 1984;Aasen and Ullebo, 1985;Johnston L.D., 1980), family problems while growing up (Holland and Griffin, 1984), delinquency (Wright and Moore, 1982;Orive and Gerard, 1980), criminal acts (Sukter et al, 1984;Shaffer et al, 1987;Goodkin and Wilson, 1982) and deviant behaviour (O'Donnell and Clayton, 1979). In their longitudinal survey, Kellam et al, (1980) found that children rated by teachers as aggressive used drugs most often and that males who were shy-aggressive first-graders used drugs more if they became antisocial as teenagers.…”