Perceptual discrimination difficulty and familiarity in the Uncanny Valley: more like a 'Happy Valley'

Source record cheetham-2014-happy-valley · 2014 · Frontiers in Psychology
Evidence tier: B (peer-reviewed-journal) · Verification: verified-abstract (compiler confidence: high)
Bottom line: Contrary to the uncanny valley hypothesis, category-ambiguous faces were easier (not harder) to discriminate, and greater discrimination difficulty went with more positive affect — a 'Happy Valley'.

Citation

Marcus Cheetham, Pascal Suter, Lutz Jäncke (2014). Perceptual discrimination difficulty and familiarity in the Uncanny Valley: more like a 'Happy Valley'. Frontiers in Psychology, 5, 1219. https://doi.org/10.3389/fpsyg.2014.01219

Verification entry (identifiers, resolvers, claims with source locations): /data/citations.json#cheetham-2014-happy-valley

Study design

Field	Value
Design	Three experiments on avatar-to-human morph continua: discrimination difficulty, affect, processing-bias control
Modality	cg-face
Stimuli	Avatar-human morph continua (static faces)
Participants (N)	not recorded
N detail	not in abstract
Topics	uncanny-valley, categorical-perception

Results

Metric	Value	Note
Discrimination difficulty	lower for ambiguous faces, higher for human faces	opposite of the profile UVH assumes
Difficulty ↔ affect	more difficulty → more positive affect	strongest for ambiguous faces
Processing level	avatars at category level, humans at individual level

Mechanism relevance

against-categorization-ambiguity

Limitations

Static morph stimuli

Cited in

MR-0002: The Uncanny Valley and Synthetic Media: Does It Exist, What Causes It, and Have Deepfakes Crossed It?

Verification

Field	Value
Status	`verified-abstract`
Compiler confidence	high
Checked on	2026-10-07
Via	Semantic Scholar API abstract

Values on this page have not all been checked against the full text. Confirm them against the primary source before high-stakes use.