Extraverts have a low level
of arousability — in other words, it takes more stimulation for them to be at an optimum level of arousal.
They reported significantly higher sexual anxiety, lower
sexual arousability, lower dyadic desire, and fewer positive sexual cognitions.
All the elements of natural mothering, especially breastfeeding and sharing sleep, benefit the infant's breathing control and increase the mutual awareness between mother and infant so that
their arousability is increased and the risk of SIDS decreased.»
These people have high metabolism, high energy and
arousability.
The effects of distance and individual differences in
arousability on nonverbal involvement: A test of discrepancy - arousal theory