Peter J. B. Hancock

Evolving the memory of a criminal’s face: methods to search a face space more effectively (2009)

Frowd, Charlie David, Bruce, Vicki, Pitchford, Melanie, Gannon, Carol, Robinson, Mark, Tredoux, Colin, ...

Witnesses and victims of serious crime are often required to construct a facial composite, a visual likeness of a suspect’s face. The traditional method is for them to select individual facial...

Multiple repetition priming of faces: Massed and spaced presentations (2009)

Lander, Karen, Bruce, Vicki, Smith, Edmund, Hancock, Peter J. B.

Previously viewing a face typically leads to a decrease in the amount of time taken to later identify it (repetition priming). Five repetition priming experiments are reported, which investigate...

Patterns of eye-movements when Male and Female observers judge female attractiveness, body fat and waist-to-hip ratio (2009)

Cornelissen, Piers L., Hancock, Peter J. B., Kiviniemi, Vesa W., George, Hannah R., Tovée, Martin J.

Behavioural studies of the perceptual cues for female physical attractiveness have suggested two potentially important features; body fat distribution (the waist-to-hip ratio or WHR) and overall body...

Changing faces: Direction is important (2009)

Ross, David A., Hancock, Peter J. B., Lewis, Michael B.

Recent research has provided evidence for the role of norm-based coding in face recognition (e.g. Leopold et al., 2001). In such a model, any given face can be represented by a vector from the norm,...

Do faces capture the attention of individuals with Williams syndrome or Autism? Evidence from tracking eye movements (2008)

Riby, Deborah M., Hancock, Peter J. B.

The neuro-developmental disorders of Williams syndrome (WS) and autism can reveal key components of social cognition. Eye‐tracking techniques were applied in two tasks exploring attention to...

Looking at Movies and Cartoons: Eye-tracking evidence from Williams syndrome and Autism (2008)

Riby, Deborah M., Hancock, Peter J. B.

Background: Autism and Williams syndrome (WS) are neuro-developmental disorders associated with distinct social phenotypes. Whilst individuals with autism show a lack of interest in socially...

Improving the quality of facial composites using a holistic cognitive interview (2008)

Frowd, Charlie David, Bruce, Vicki, Smith, Ashley J., Hancock, Peter J. B.

Witnesses to and victims of serious crime are normally asked to describe the appearance of a criminal suspect, using a Cognitive Interview (CI), and to construct a facial composite, a visual...

Helping the police to construct the face of a criminal (2008)

Frowd, Charlie David, Bruce, Vicki, Hancock, Peter J. B.

A summary of work on improving the production and identification of facial composites

Viewing it differently: social scene perception in Williams syndrome and Autism (2008)

Riby, Deborah M., Hancock, Peter J. B.

The genetic disorder Williams syndrome (WS) is associated with a propulsion towards social stimuli and interactions with people. In contrast, the neuro-developmental disorder autism is characterised...

An evaluation of US systems for facial composite production (2007)

Frowd, Charlie David, McQuiston-Surrett, Dawn, Anandaciva, S., Ireland, C. G., Hancock, Peter J. B.

Witness and victims of serious crime are normally requested to construct a facial composite of a suspect’s face. While modern systems for constructing composites have been evaluated extensively in...

An application of caricature: how to improve the recognition of facial composites (2007)

Frowd, Charlie David, Bruce, Vicki, Ross, David, McIntyre, Alex H., Hancock, Peter J. B.

Facial caricatures exaggerate the distinctive features of a face and may elevate the recognition of a familiar face. We investigate whether the recognition of facial composites, or pictures of...

Equally attending but still not seeing : an eye-tracking study of change detection in own and other race faces. (2007)

Hirose, Yoriko, Hancock, Peter J. B.

The present study aimed to investigate whether the faster change detection in own race faces in a change blindness paradigm, reported by Humphreys, Hodsoll and Campbell (2005, Visual Cognition, 12,...

Parallel approaches to composite production: interfaces that behave contrary to expectation (2007)

Frowd, Charlie David, Bruce, Vicki, Ness, Hayley, Bowie, Leslie, Paterson, Jenny, Thomson-Bogner, Claire, ...

This paper examines two facial composite systems that present multiple faces during construction to more closely resemble natural face processing. We evaluated a ‘parallel’ version of PRO-fit,...

The relative importance of external and internal features of facial composites (2007)

Frowd, Charlie David, Bruce, Vicki, McIntyre, Alex H., Hancock, Peter J. B.

Three experiments are reported that compare the quality of external with internal regions within a set of facial composites using two matching-type tasks. Composites are constructed with the aim of...

Monozygotic twins’ colour-number association, a case study (2006)

Hancock, Peter J. B.

A case study of a pair of monozygotic twins, both of whom show a strong and enduring colour-number association, is reported. The origin of the colours, in a jigsaw puzzle, is known. Neither reports...

The enigma of facial asymmetry: Is there a gender specific pattern of facedness? (2005)

Hardie, Scott, Hancock, Peter J. B., Rodway, Paul, Penton-Voak, Ian, Carson, D., Wright, Lynn

Although facial symmetry correlates with facial attractiveness, human faces are often far from symmetrical with one side frequently being larger than the other (Kowner, 1998). Smith (2000) reported...

Robust representations for face recognition: the power of averages (2005)

Burton, A. Mike, Jenkins, Rob, Hancock, Peter J. B., White, David

We are able to recognise familiar faces easily across large variations in image quality, though our ability to match unfamiliar faces is strikingly poor. Here we ask how the representation of a face...

Pop-out from abrupt visual onsets (2004)

Hancock, Peter J. B., Phillips, William A.

We report a novel psychophysical paradigm that distinguishes the information present in abrupt stimulus onset from that in the following display. The task is to pick the one odd item from a set added...

EvoFIT: A holistic, evolutionary facial imaging technique for creating composites (2004)

Frowd, Charlie David, Hancock, Peter J. B., Carson, D.

EvoFIT, a computerized facial composite system is being developed as an alternative to current systems. EvoFIT Faces are initially presented to a witness with random characteristics, but through a...

What's a face worth: Noneconomic factors in game playing (2003)

Hancock, Peter J. B., DeBruine, Lisa M.

Where behavior defies economic analysis, one explanation is that individuals consider more than the immediate payoff. We present evidence that noneconomic factors influence behavior. Attractiveness...

Human female attractiveness: waveform analysis of body shape (2002)

Tovee, Martin J., Hancock, Peter J. B., Mahmoodi, Sasan, Singleton, Ben R. R., Cornelissen, Piers L.

Two putative cues to female physical attractiveness are Body Mass Index (BMI) and shape (particularly the Waist-Hip Ratio or WHR). To determine the relative importance of these cues we asked 23 male...

Four heads are better than one: combining face composites yields improvements in face likeness (2002)

Bruce, Vicki, Ness, Hayley, Hancock, Peter J. B., Newman, Craig, Rarity, Jenny

Four different participants constructed face composites, using “PRO-Fit”, of familiar and unfamiliar targets, with reference images present or from memory. The "mean" of all four composites,...

Recognition of unfamiliar faces (2000)

Hancock, Peter J. B., Bruce, Vicki, Burton, A. Mike

People are excellent at identifying faces familiar to them, even from very low quality images, but are bad at recognising, or even matching, faces that are unfamiliar. In this review we shall...

Evolving faces from principal components (2000)

Hancock, Peter J. B.

A system that uses an underlying genetic algorithm to evolve faces in response to user selection is described. The descriptions of faces used by the system are derived from a statistical analysis of...

From pixels to people: a model of familiar face recognition (1999)

Burton, A. Mike, Bruce, Vicki, Hancock, Peter J. B.

Research in face recognition has largely been divided between those projects concerned with front-end image processing and those projects concerned with memory for familiar people. These perceptual...

A comparison of two computer-based face identification systems with human perceptions of faces (1998)

Hancock, Peter J. B.

The performance of two different computer systems for representing faces was compared with human ratings of similarity and distinctiveness, and human memory performance, on a specific set of face...

Face processing: human perception and principal components analysis (1996)

Hancock, Peter J. B., Burton, A. Mike, Bruce, Vicki

Principal component analysis (PCA) of face images is here related to subjects' performance on the same images. In two experiments subjects were shown a set of faces and asked to rate them for...

Coding Strategies for Genetic Algorithms and Neural Nets (1993)

Hancock, Peter J. B.

The interaction between coding and learning rules in neural nets (NNs), and between coding and genetic operators in genetic algorithms (GAs) is discussed. The underlying principle advocated is that...

Human female attractiveness: waveform analysis of body shape.

Tovée, Martin J, Hancock, Peter J B, Mahmoodi, Sasan, Singleton, Ben R R, Cornelissen, Piers L

Two putative cues to female physical attractiveness are body mass index (BMI) and shape (particularly the waist-hip ratio or WHR). To determine the relative importance of these cues we asked 23 male...