In studies of drug effects, introverts were found to

Dopamine firing increases when

Research shows that a high socioeconomic status enhances the effects of circulating testosterone on behavior.

Eysenck argued that the intensified emotional arousal associated with neuroticism

People who show an increase in brain-wave response as stimuli become more intense are termed

Eysenck argued that introverts with high emotionality are especially susceptible to anxiety and depression.

Men with high circulating levels of testosterone are more likely to be engaged in an occupation requiring dominance.

Extraverts tend to perform better on tasks requiring vigilance.

Introverts tend to be easier to condition.

Mr. Frog has Stage 4 chronic kidney disease (CKD).  He is not yet receiving dialysis. Which type of diet would be most appropriate for Mr. Frog?