Experiments with Humans That Have Manipulated the Attentional Field Size

Experiments with humans that have manipulated the attentional field size via use of small or large (relative to target size) exogenous pre-cues have observed:

A) performance shifts in the direction of response gain when attentional fields were small and when attentional fields were large
B) performance shifts in the direction of contrast gain when attentional fields were small and in the direction of response gain when attentional fields were large
C) performance shifts in the direction of response gain when attentional fields were small and in the direction of contrast gain when attentional fields were large
D) performance shifts in the direction of contrast gain when attentional fields were small and when attentional fields were large