Table 1 Glossary of Model Parameters

Go/No-Go

Go drift rate

v.go

Quantifies efficiency of evidence accumulation toward Go stimulus

Go/No-Go

No-Go drift rate

v.nogo

Quantifies efficiency of evidence accumulation toward No-Go stimulus

Go/No-Go

Average drift rate

v.average

Quantifies efficiency of evidence accumulation towards both stimuli.

Go/No-Go

Starting point

z

Indexes response bias. ↑ values = bias towards responding; ↓ values = bias for not responding

Go/No-Go

Non-decision time

Ter

Time taken up by processes irrelevant to decision-making, e.g., motor responses

Go/No-Go

Boundary separation

a

Indexes speed-accuracy trade-off. ↑ values = more careful responding at expense of speed, ↓ values = prioritising speed over accuracy

WCST

Reward rate

r

Quantifies how quickly participants update beliefs about a choice following rewarding/positive feedback

WCST

Punishment rate

p

Quantifies how quickly participants update beliefs about a choice following punishing/negative feedback

WCST

Decision-consistency

d

Indexes the extent to which participants make choices more consistent with the present rule (↑d) or more exploratory choices (↓d)

WCST

Attentional focusing

f

Indexes the degree to which attention is narrowly focused on a specific rule over others, in trials where feedback is ambiguous