The focus of this study is on the role of basic skills (defined as the
summed results of national achievement test scores in Swedish and mat
hematics) in boys' social developmental process. With reference to a h
olistic model for individual functioning and development, the aim of t
he investigation was obtained by studying the relationships between ba
sic skills and early problematic behaviour at the age of 10, on the on
e hand, and later social maladjustment, manifest in the presence in of
ficial registers for alcohol problems, crime and psychiatric disorders
, on the other. Based on data concerning basic skills and six teacher-
rated behaviours (aggressive behaviour, motor restlessness, shyness, d
isharmony, concentration difficulties, and overambition), boys with si
milar profiles across the seven factors were grouped together using cl
uster analysis. Six clusters were deemed an optimal solution. Register
data for alcohol problems, crime and psychiatric diagnoses were avail
able with no attrition. For each of the clusters, the percentage of bo
ys who appeared in any of the records was reported. The results strong
ly corroborate holistic assumptions that low levels of basic skills at
an early age per se is not a precursor of later maladjustment. Even w
hen occurring in conjunction with shyness, the results did not point t
o an increased risk of negative social development. It is only when lo
w basic skill levels form clusters along with other problematic behavi
ours that the risk increases. This. is most obvious when low basic ski
lls is present in profiles which are also characterised by aggressiven
ess, motor restlessness, disharmony and concentration difficulties. Am
ong the boys belonging to the most 'problematic cluster' at age 10, no
less than 90% were found in at least one of the civic records through
young adulthood.