The relation between infant temperament, self-recognition, and embarra
ssment was examined in a longitudinal study. Infants were studied at 5
, 13, and 22 months of age. At 5 and 13 months, parental reports of te
mperament and heart rate variability (HRV) were collected. At 22 month
s, self-recognition, a measure of self-referential behaviour, and emba
rrassment were observed. The results indicated a relation between earl
y temperament differences, self-recognition, and embarrassment. Those
infants who showed self-recognition and who had difficult temperaments
were likely to exhibit embarrassment when compared to those infants w
ho showed self-recognition, but who had easygoing temperaments.