The relation of ANS and HPA activation to infant anger and sadness response to goal blockage.

@article{Lewis2006TheRO,
  title={The relation of ANS and HPA activation to infant anger and sadness response to goal blockage.},
  author={Michael J. Lewis and Douglas S Ramsay and Margaret W Sullivan},
  journal={Developmental psychobiology},
  year={2006},
  volume={48 5},
  pages={
          397-405
        }
}
This study examined the relation of anger and sadness to heart rate and cortisol in 4-month-old infants' (n = 56) response to a goal blockage. The blockage occurred during a contingency learning procedure where infants' response no longer produced a learned interesting event. Anger and sadness were the major emotional expressions to the blockage. The two emotional expressions were differentially related to heart rate and cortisol. Anger was related to increased heart rate, but not cortisol… CONTINUE READING

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