Last Modified: January 17, 2023 by K. Borchert (katjab@millisecond.com), Millisecond
Script Copyright © Millisecond Software, LLC
This script implements an Aggression Themed Emotional Stroop task. The classic Stroop paradigm demonstrates the interference of word meaning on naming the color in which the words are written as measured by reaction time/accuracy differences to color-meaning congruent and color-meaning incongruent combinations. The Aggression Stroop takes advantage of this basic Stroop interference effect by comparing responses to aggression related words, positive and negative words and neutral words.
The implemented procedure is based on:
Smith, P. & Waterman, M. (2003). Processing bias for aggression words in forensic and nonforensic samples. Cognition and Emotion, 17, 681-701.
This script uses voice recordings. The accuracy of the responses needs to be manually scored based on recorded files or use Tools -> Speech Recognition -> Analyze Recorded Responses.
5 minutes
Participants are presented words from 5 different categories (aggression, neutral, positive, negative, color word) in four different colors (blue, red, yellow, green) and are asked to speak out loud the color of the word.
1. Practice Block: 10 trials (not original; this script uses the words "one" to "ten" as practice stimuli)
2. Test Block: 125 trials (= 5 categories x 25 trials); trials are randomly sampled
without replacement
Since accuracy is not checked by this script (but has to be manually done based on the recorded voice files),
no error messages can be presented.
• original stimuli by Smith & Waterman (2003)
(due to a potential typo in the original article one word appeared
under two categories (Appendix2); we replaced it with a word that is similar in length and appearance
=> section Editable STIMULI-> Negative Words)
• each color appears 6 times in each category (the 7th pairing of word-color is random)
• color words "red", "yellow", "blue" and "green" are not used as targets
• 5 color words are repeats (see Smith & Waterman, 2003)
not original; can be easily altered under section Editable INSTRUCTIONS
File Name: emotionalstroopwithvoicerecording_summary*.iqdat
| Name | Description |
|---|---|
| inquisit.version | Inquisit version number |
| computer.platform | Device platform: win | mac |ios | android |
| startDate | Date the session was run |
| startTime | Time the session was run |
| subjectId | Participant ID |
| groupId | Group number |
| sessionId | Session number |
| elapsedTime | Session duration in ms |
| completed | 0 = Test was not completed 1 = Test was completed |
File Name: emotionalstroopwithvoicerecording_raw*.iqdat
| Name | Description |
|---|---|
| build | Inquisit version number |
| computer.platform | Device platform: win | mac |ios | android |
| date | Date the session was run |
| time | Time the session was run |
| subject | Participant ID |
| group | Group number |
| session | Session number |
| blockCode | Name of the current block |
| blockNum | Number of the current block |
| trialCode | Name of the current trial |
| trialNum | Number of the current trial |
| target | The currently selected target word |
| color | The currently selected color |
| response | The participant's response (recording of response) the recording needs to be manually scored |
| latency | The response latency (in ms); measured from onset of word |
The procedure can be adjusted by setting the following parameters.
| Name | Description | Default |
|---|---|---|
| fixationCrossPresentationTime | Time (in ms) that fixation cross is presented | 500ms |