Taking coping research as the point of departure, a questionnaire on t
he strategies of anger regulation preferred by schoolage-children (KAR
ST) is presented. This self-report measure was tested with a sample of
141 youngsters of grade 3 to grade 6. Results suggest a factor soluti
on which was stable over time and easy to interpret. Test-retest relia
bilities of the four factors ranged between .68 and .78; Cronbach's al
pha varied between .59 and .80. In light of the fact that children of
this age are still developing their powers of self-observation and sel
f-report, these results were considered satisfactory. Correlations wit
h social desirability were generally low. In order to further test the
validity of the self-reported strategies (KARST-Selbst), a parallel q
uestionnaire was developed which asked the children's friends about th
e strategies the children preferred when they were angry at them (KARS
T-Fremd). The friend's report is limited to the observable strategies
of anger regulation. Results indicate that children's self reports wer
e supported by significant correlations with their friend's reports fo
r four of the seven strategies at two points of measurement and for tw
o further strategies at one point. Further analyses suggest that the c
hoice of anger regulation strategies is specific to a particular frien
dship. Outsiders seem to be unable to assess correctly which strategie
s children prefer in a particular friendship, even when they also call
themselves friends.