Design your own visual search experiment here. Like Experiments 1A and 1B of Treisman and Gelade (1980), your experiment will have 1, 5, 15, or 30 items in an array occupying 14×8° of visual field.
| Definition | Preview | |
|---|---|---|
| Targets | ||
| Distractors |
Target stimuli are the ones that the subject will search for; distractors are the other stimuli in the background.
Stimuli are defined as character-color-rotation-reflection and are separated by commas. Omit a parameter to use its default.
Character can be any Unicode glyph (copy characters from here or here).
Color is specified by name or by 3- or 6-digit hexadecimal value (listed by hexadecimal or name).
Rotation is given in degrees (or R for random rotation).
Reflection is set by entering 1 (or 0 to keep it unreflected if default is reflected).
Thus in Experiment 1B, the target is “T-green” and the distractor list is “T-brown,X-green”. More examples: “E--90-1” is a reflected E, rotated 90° clockwise; “F-red-R” is a randomly rotated red F.
| Background | Shape color | Rotation | Font |
By default, the background is white; shapes are black, rotated 0°, not reflected, and in Arial font.
By default, there are 16 practice trials (2 per set size and absent/present condition) and 64 test trials (8 per set size and condition). You may change this below.
| Practice trials per condition | (total 16) | |
|---|---|---|
| Test trials per condition | (total 64) |
Use this link to perform the experiment now, or copy it to perform the experiment multiple times.