Trial data

A trial is a single instance of a participant interacting with a task — it captures information about the participant, the task, and their interaction. BDM spreads trial information across several related tables (below), joined by _id foreign keys, so a wide range of cognitive tasks and questionnaires can be represented consistently.

Tables reference each other by _id foreign keys — e.g. stimulus_id in Response points to a row in the Stimulus table. When several entities occur in one trial (e.g. multiple stimuli), their ids/values are concatenated into a single string on CSV export.

Schema version 26.0608 — fetched from behaverse.org/schemas/trial.

Table	Fields	Description
Response	75	Main table where each row describes a response in a trial.
Stimulus	19	Describes each of the stimuli that were shown during an trial.
Option	18	Describes each option that a subject could choose from in a trial.
Input	15	A detailed log of all inputs and clicks recorded during the trial.
StimulusComponent	13	Stimuli can comprise multiple components. This table describes each component of a stimulus.
OptionComponent	14	Options can comprise multiple components. This table describes each component of an option.
Instrument	7	Describes the instrument used for data acquisition.