Our results suggesting that psychodynamic effects of alcohol may be exposure‐rate dependent is not new, but remains relatively unexplored. 19 , 20 , 21 Studies using oral challenge techniques have been limited by the lack of control of the alcohol concentration trajectory. Under conditions in which participants could select their exposure rate, FHD, but not drinking intensity group, was associated with rate‐dependent subjective response. Specifically, this negative relationship between FHD and the alcohol exposure‐rate dependent term for both intoxication and stimulation, suggests that those with higher FHD perceive less of these effects for a given positive exposure rate. Such a person may have to drink faster if intoxication or stimulation is a goal, suggesting support for the low level of response model. Another possibility is that higher FHD is associated with greater, more rapid acute tolerance to intoxicating and stimulating effects.
