Realise per-trial event durations onto the stimuli table

An event may declare a duration that varies from trial to trial, either read from an item column or drawn from a range. A drawn value is a pure function of the keyed hash, so both engines realise the same milliseconds, and it is written into the stimuli table as well as the generated script, because timing that varies is a variable the analysis needs, not presentation detail.

Usage

resolve_trial_timing(stimuli, design, schema)

Arguments

stimuli

A counterbalanced stimuli data frame.

design

A parsed design configuration.

schema

The parsed global schema (provides the seed).

Value

stimuli with one integer column per jittered event.