In a Modification to the Hedonic Treadmill Conception, Headey and Wearing's

In a modification to the hedonic treadmill conception, Headey and Wearing's dynamic equilibrium model suggests that people

A) reach an equilibrium about halfway between the effects of new events and older happiness baselines.
B) can only adapt to negative events with the social support of others.
C) have positive rather than neutral happiness baselines and return to differing baselines depending on their personalities.
D) share the same basic adaptation response system that is largely unaffected by differences in the events experienced or an individual's temperament.