Positivity offset
At zero input, we lean mildly positive, which keeps us exploring.
What it means
The positivity offset is the tendency for the positive affect system to show a small but reliable output even at very low or neutral levels of stimulation, so that in the absence of strong cues people drift toward mild positivity. Paired with the negativity bias, in which the negative system reacts more steeply to strong inputs, it forms a two-part design: a gentle baseline pull toward approach and exploration, plus a sharp alarm for threat. The offset is thought to be adaptive because it motivates organisms to venture into neutral, unknown environments rather than freeze, supporting foraging and learning. It is a core prediction of the evaluative space model, which treats positive and negative systems as separable. Together with negativity bias it explains why life can feel net mildly pleasant yet be dominated by bad events when they occur.
Examples
Dropped into an unfamiliar but harmless room, most people feel slightly upbeat and curious rather than neutral, which nudges them to look around.
On a quiet Sunday with nothing happening, most people report feeling faintly good rather than flat — which is precisely why they get restless and go out for a walk.
Handed a menu of unfamiliar dishes, diners lean mildly toward trying one; it takes an actual bad review or an off smell to produce the sharper pull the other way.
First described in Cacioppo & Berntson (1994); evaluative space model.