TABLE 3.

Mean Performance Scale Subtest Scores, Measured With the WPPSI-R, According to Conception Mode

ScoreStatistical Analysis*
ICSIIVFNC
MeanSDMeanSDMeanSD
Object assembly (n = 1366)11.302.9011.303.0311.172.87P < .05
Block design (n = 1364)11.163.3310.773.1010.942.99P < .05
Mazes (n = 1365)10.093.469.813.479.583.39NS
Picture completion (n = 1366)11.092.5710.622.6511.102.66NS
Animal pegs (n = 1355)11.002.9611.212.6111.142.67P < .05§
  • * Three-way analysis of variance (conception mode × country × gender and conception mode × educational level × age of the mother at the time of the birth). NS indicates nonsignificant (P > .05).

  • Significant conception mode-educational level of the mother interaction effect and conception mode-age of the mother at the time of the birth interaction effect.

  • Significant conception mode-country interaction effect and conception mode-educational level of the mother interaction effect.

  • § Significant conception mode-country-gender interaction effect.