DirectRT User Guide

Everything you need to build, run, and analyze reaction-time experiments in DirectRT — from your first bare-bones session to advanced designs like priming, the IAT, and TTL hardware signals. Browse the full contents in the sidebar, or start with one of these.

Start here

Getting started

Setup

Install DirectRT and get oriented with the main program.

Concepts

Introduction & key concepts

How blocks, trials, stimuli, timing, and styles fit together.

Design

Creating input files

Build an experiment in any spreadsheet and save it as CSV.

Appearance

Styles & the Style Editor

Control fonts, colors, alignment, and reaction-time limits.

Run

Running an input file

Run from DirectRT, a command prompt, or MediaLab.

Data

Output files

Understand the data and log files DirectRT produces.

Learn by example

The tutorial

A guided, 21-step walkthrough from bare bones to full studies.

Reference

Key codes

Look up key names, codes, and special response events.

New to DirectRT?

If you are just getting started, we suggest running a few of the sample studies to see what DirectRT can do — either by working through the tutorial here, or by opening the samples directly from the Samples folder in your DirectRT program folder, just as if they were real experiments.

Can’t find what you need? Contact us and we’ll help you directly.