<Dd> Self - reported relationship quality was higher among those high in self - reported extraversion and agreeableness . </Dd> <Dd> Self - reported relationship quality is negatively related to both self and partner - reported neuroticism </Dd> <Dd> Observers rated the relationship quality higher if the participating partner's self - reported extraversion was high </Dd> <Dl> <Dd> High self - reported neuroticism, extraversion, and agreeableness are related to high levels of self - reported relationship quality </Dd> <Dd> Partner - reported agreeableness is related to observed relationship quality . </Dd> </Dl>

Which of the following psychologists proposed what is known as the big five model of personality