Bivalent Shape Task
The Bivalent Shape Task Version 1.0 (Esposito et al., 2014). A simple nonverbal dimensional filtering task akin to the stroop task.
A dimensional filtering task designed for children and adults that assesses interference suppression. Participants respond to colored shapes (blue circles, yellow circles, blue squares, yellow squares) that appear on screen, responding by clicking or pressing keys corresponding to response options shown at the bottom. The task includes practice, neutral (shapes without color variation), congruent (shape and color map to same response), incongruent (shape and color map to different responses), and mixed blocks. Participants must attend to the target dimension while ignoring the irrelevant dimension. Supports both mouse/touch and keyboard input modes.
| userandom | if 1, uses a random order each time; if 0, uses single fixed order (default: 1) |
| horizontaloffset | Pixels from center line that the responses are placed (default: 130) |
| verticaloffset | Height of responses, below centerline. Override for better control. (default: 150) |
| timelimit | Timeout in ms. (default: 3000) |
| usevideofeedback | Whether video correct/error feedback should be given (default: 1) |
| useaudiofeedbackalways | Whether audio feedback should always be given (default: 0) |
| useaudiofeedbackpractice | Whether audio feedback should be given during practice (default: 0) |
| numtrials | How many trials per block? (default: 50) |
| responsemode | Response input mode: keyboardShift (LEFT-SHIFT/RIGHT-SHIFT), keyboardSafe (Z/slash), mousebutton (clicks), mousetarget (clickable targets), touchtarget (touch optimized) (default: auto) |
| usemouse | DEPRECATED: Use responsemode parameter instead. Use mouse/touch input (1) versus keyboard (0) (default: 1) |
| subnum | test | type | block | congruency | trial | stim | resp | corr | rt | tooslow |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | BST | practice | 0 | 0 | 1 | 6 | <rshift> | 1 | 1276 | 0 |
| 1 | BST | practice | 0 | -1 | 2 | 4 | <lshift> | 1 | 1182 | 0 |
| 1 | BST | practice | 0 | -1 | 3 | 2 | <rshift> | 1 | 941 | 0 |
| 1 | BST | practice | 0 | 1 | 4 | 3 | <rshift> | 1 | 730 | 0 |
| 1 | BST | practice | 0 | 0 | 5 | 5 | <lshift> | 1 | 1331 | 0 |