Visual Search Task
Introduction
The visual search task investigates how we find target objects in complex scenes using vision. Related research began in the late 1970s with the work of Anne Treisman. An important finding is that when we need to search for objects with specific features, the search cannot be performed in parallel, so the more objects there are, the longer the search time.
Searching for objects with a specific combination of features (such as finding a green round bottle among bottles of various colors and shapes) is called "conjunctive search." The trend of increasing search time as the number of objects increases is called the "search slope."
Experiment Entry
视觉搜索实验
请根据屏幕上的刺激，判断是否有目标“T”出现。按空格键或点击刺激区表示发现目标，否则不按键。
FAQ & Instructions
Experiment Instructions
In each round of this experiment, several "T"s or distractors will appear on the screen. Please judge whether there is a target "T". If so, press the space bar; otherwise, do nothing. The experiment will record the average reaction time under different set sizes.
After the task ends, your performance statistics will be displayed. You can try multiple times to improve your attention and search efficiency.
Further Reading
- Treisman, A. (1977). Focussed attention in the perception and retrieval of multidimensional stimuli. Perception and Psychophysics, 9, 40-50.
- Treisman, A., & Gelade, G. (1980). A feature integration theory of attention. Cognitive Psychology, 12, 97-136.