Language
Does verb grammar change where your eyes wander while listening?
Open access · cc by · source: Europe PMC
People who heard stories written as ongoing action ('was climbing') made shorter, more widely scattered eye fixations on a blank screen than people who heard the same stories as completed action ('climbed').
Study at a glance
- Design
- Human experiment — Between-subjects listening experiment: stories told in past progressive ('was climbing') vs simple past ('climbed') while eyes were tracked on a blank white screen with no task
- N
- N=63 · 63 right-handed native English speakers: 31 in the past progressive condition and 32 in the simple past condition
- Population
- Undergraduate students at the University of California, Merced, receiving course credit
- Outcome
- Fixation duration; spatial spread of fixations (kurtosis, convex hull area, total path length) during speech and during 2-s silences
Structured fields used in claim comparison tables when every cited study has a complete layer.
Key findings
Listeners to past progressive stories spread their gaze over a larger area of the screen and travelled further, while simple past listeners tended to stay fixed near the centre. Average fixations were shorter for past progressive (about 473 ms) than for simple past (about 645 ms). The difference was largest while speech was playing but still held during the silences after sentences. The two groups did not differ in fixation duration during the earlier picture task, suggesting the effect is not due to pre-existing group differences.
Methodology
Students listened over headphones to 22 short stories while looking at a blank white screen, with no instructions other than to keep their eyes open. Half were randomly assigned to hear every story in the past progressive and half in the simple past; the words were otherwise identical. A 2-second silence was added after each sentence so both conditions had matched time windows, and eye movements were recorded throughout. A picture-viewing task beforehand served as a cover story and a baseline check.
Limitations
Each person heard only one grammatical form, so individual differences cannot be fully ruled out even with random assignment and a baseline check. The stories mixed verbs with and without natural end points and of short and long duration, and the authors did not control these semantic factors. Progressive forms are also longer and less frequent than simple past forms, which the authors argue against but did not test directly. The study shows a link between grammar and eye movements, not the brain mechanism; claims about sensorimotor simulation are an interpretation.
How this study connects
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