A spatial cueing paradigm (Posner, 1980) that measures covert attentional orienting. An arrow cue appears at the centre of the screen and points left or right. After a variable delay, a target (star) appears on the left or right side. Participants respond as quickly as possible.
Valid trials (cue points to target side) yield faster reactions than invalid trials (cue points away), demonstrating the cost/benefit of spatial attention.
Fixation → Arrow cue → Target → ITI
500 ms 500 ms (response)
sudo apt install libsdl3-dev on Ubuntu/Debian)# Fullscreen, participant 1
go run main.go -s 1
# Windowed (development / testing)
go run main.go -s 1 -d
| Flag | Default | Description |
|---|---|---|
-s |
0 |
Participant ID (integer) |
-d |
off | Development mode: windowed 1024×768 |
Press any key as quickly as possible when the target appears.
Trial information is printed to the console (congruency, side, key, reaction time). No .xpd file is written in the current version.
Posner, M. I. (1980). Orienting of attention. Quarterly Journal of Experimental Psychology, 32(1), 3–25. https://doi.org/10.1080/00335558008248231