Mental Rotation Task

HED Task ID: hedtsk_mental_rotation

Also known as: MRT, Shepard-Metzler Task

Judgment of whether two rotated objects are identical or mirror images; RT scales linearly with angular disparity, indexing mental rotation.

Description

Participants view pairs of 3D objects (block figures, letters, or geometric forms) and determine whether they are identical (one is a rotated version of the other) or mirror images. Objects are rotated at angles ranging from 0 to 180 degrees relative to each other. The well-established finding is that RT increases linearly with angular disparity, suggesting an analog mental rotation process. The task measures spatial visualization ability, mental imagery, and visuospatial working memory. Sex differences in mental rotation are among the most reliable cognitive sex differences.

Inclusion test

Procedure

Two figures (3-D block shapes, letters, or hands) are presented at different orientations; participants judge whether they are the same or mirror-reversed.

Manipulation

Angular disparity between the two figures (0°–180°); stimulus complexity; dimensionality (2D vs. 3D).

Measurement

RT as a function of angular disparity (linear slope = rotation rate); accuracy; the RT-angle linear function.

Variations

Variation

Description

Justification

Shepard-Metzler 3D Block Figures

Classic 3D object pairs; same vs. mirror-image judgments.

Canonical 3D block figure rotation; depth and perspective rotation

2D Shape Rotation

Letters, polygons, or abstract 2D shapes.

Flat 2D figures; different stimulus complexity and dimensionality

Body Part Rotation (Hand Laterality)

Judge left/right hand in rotated orientations.

Hands judged as left/right; embodied rotation via motor imagery

Mirror vs. Identical Discrimination

Discriminating rotated identical from mirror-reflected objects.

Distinguish mirrored from same-orientation figure; different judgment type

Embodied/Motor-Assisted Rotation

Physical rotation gestures during mental rotation.

Physical hand rotation accompanies mental rotation; different embodiment condition

Virtual Reality Mental Rotation

Immersive 3D rotation with stereoscopic displays.

Immersive VR environment; full-body spatial context changes processing

Egocentric vs. Allocentric Rotation

Rotating self-perspective vs. rotating objects.

Participant perspective vs. object-centered rotation; different reference frame

Cognitive processes

This task engages the following cognitive processes:

Key references

  • {‘authors’: ‘Shepard, R. N., & Metzler, J.’, ‘year’: 1971, ‘title’: ‘Mental Rotation of Three-Dimensional Objects’, ‘venue’: ‘Science’, ‘venue_type’: ‘journal’, ‘journal’: ‘Science’, ‘volume’: ‘171’, ‘issue’: ‘3972’, ‘pages’: ‘701-703’, ‘doi’: ‘10.1126/science.171.3972.701’, ‘openalex_id’: None, ‘pmid’: None, ‘citation_string’: ‘Shepard, R. N., & Metzler, J. (1971). Mental rotation of three-dimensional objects. Science, 171(3972), 701-703.’, ‘url’: ‘https://doi.org/10.1126/science.171.3972.701’, ‘source’: ‘crossref’, ‘confidence’: ‘high’, ‘verified_on’: ‘2026-04-20’}

  • {‘authors’: ‘Zacks, J. M.’, ‘year’: 2008, ‘title’: ‘Neuroimaging Studies of Mental Rotation: A Meta-analysis and Review’, ‘venue’: ‘Journal of Cognitive Neuroscience’, ‘venue_type’: ‘journal’, ‘journal’: ‘Journal of Cognitive Neuroscience’, ‘volume’: ‘20’, ‘issue’: ‘1’, ‘pages’: ‘1-19’, ‘doi’: ‘10.1162/jocn.2008.20.1.1’, ‘openalex_id’: None, ‘pmid’: None, ‘citation_string’: ‘Zacks, J. M. (2008). Neuroimaging studies of mental rotation: A meta-analysis and review. Journal of Cognitive Neuroscience, 20(1), 1-19.’, ‘url’: ‘https://doi.org/10.1162/jocn.2008.20.1.1’, ‘source’: ‘crossref’, ‘confidence’: ‘high’, ‘verified_on’: ‘2026-04-20’}

Recent references

  • {‘authors’: ‘Zacks, J. M.’, ‘year’: 2008, ‘title’: ‘Neuroimaging Studies of Mental Rotation: A Meta-analysis and Review’, ‘venue’: ‘Journal of Cognitive Neuroscience’, ‘venue_type’: ‘journal’, ‘journal’: ‘Journal of Cognitive Neuroscience’, ‘volume’: ‘20’, ‘issue’: ‘1’, ‘pages’: ‘1-19’, ‘doi’: ‘10.1162/jocn.2008.20.1.1’, ‘openalex_id’: None, ‘pmid’: None, ‘citation_string’: ‘Zacks, J. M. (2008). Neuroimaging studies of mental rotation: A meta-analysis and review. Journal of Cognitive Neuroscience, 20(1), 1–19.’, ‘url’: ‘https://doi.org/10.1162/jocn.2008.20.1.1’, ‘source’: ‘crossref’, ‘confidence’: ‘high’, ‘verified_on’: ‘2026-04-20’}

  • {‘authors’: ‘Milivojevic, B., et al.’, ‘year’: 2023, ‘title’: ‘Editorial Board’, ‘venue’: ‘Neuroscience & Biobehavioral Reviews’, ‘venue_type’: ‘journal’, ‘journal’: ‘Neuroscience & Biobehavioral Reviews’, ‘volume’: ‘147’, ‘issue’: None, ‘pages’: ‘105134’, ‘doi’: ‘10.1016/s0149-7634(23)00103-3’, ‘openalex_id’: None, ‘pmid’: None, ‘citation_string’: ‘Milivojevic, B., et al. (2023). Imaging the spin: Disentangling the core processes underlying mental rotation by meta-analysis. Neuroscience & Biobehavioral Reviews, 147, 105131.’, ‘url’: ‘https://doi.org/10.1016/s0149-7634(23)00103-3’, ‘source’: ‘crossref’, ‘confidence’: ‘high’, ‘verified_on’: ‘2026-04-20’}