Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Cognitive Psychology (869)
- Arts and Humanities (759)
- Life Sciences (733)
- Philosophy (565)
- Neuroscience and Neurobiology (542)
-
- Cognitive Neuroscience (468)
- Ecology and Evolutionary Biology (459)
- Philosophy of Mind (437)
- Social Psychology (423)
- Animal Sciences (417)
- Evolution (410)
- Medicine and Health Sciences (395)
- Ethics and Political Philosophy (390)
- Zoology (378)
- Sociology (358)
- Education (339)
- Terrestrial and Aquatic Ecology (334)
- Communication (245)
- Clinical Psychology (241)
- Experimental Analysis of Behavior (204)
- Developmental Psychology (190)
- Personality and Social Contexts (182)
- Other Psychology (178)
- Psychiatry and Psychology (172)
- Transpersonal Psychology (165)
- Health Psychology (145)
- Applied Behavior Analysis (144)
- Institution
-
- WellBeing International (466)
- California Institute of Integral Studies (180)
- City University of New York (CUNY) (145)
- Purdue University (103)
- Old Dominion University (84)
-
- University of Nebraska - Lincoln (82)
- Western Kentucky University (80)
- Embry-Riddle Aeronautical University (75)
- University of Arkansas, Fayetteville (66)
- Singapore Management University (56)
- University of Nevada, Las Vegas (55)
- Chapman University (54)
- Portland State University (43)
- The Texas Medical Center Library (40)
- Claremont Colleges (37)
- Wilfrid Laurier University (36)
- University of New Hampshire (35)
- University of Texas at El Paso (35)
- Western Michigan University (33)
- Georgia Southern University (31)
- University of Central Florida (31)
- Central Washington University (30)
- University of Kentucky (30)
- University of Alabama in Huntsville (28)
- Edith Cowan University (26)
- Gettysburg College (26)
- California State University, San Bernardino (24)
- The University of Southern Mississippi (24)
- The University of Texas of the Permian Basin (24)
- University of Louisville (24)
- Keyword
-
- Cognition (117)
- Psychology (107)
- Perception (98)
- Consciousness (91)
- Attention (62)
-
- Memory (58)
- Emotion (51)
- Sentience (47)
- EEG (33)
- Humans (33)
- Emotions (31)
- Pain (30)
- Mindfulness (28)
- Stress (28)
- Brain (26)
- Learning (26)
- Evolution (24)
- Fish (24)
- Neuroscience (24)
- Vision (24)
- Animal welfare (23)
- Depression (23)
- Music (23)
- Welfare (22)
- Ethics (21)
- Communication (20)
- Female (20)
- Motivation (20)
- Aging (19)
- Autism (19)
- Publication Year
- Publication
-
- Animal Sentience (460)
- Journal of Conscious Evolution (145)
- MODVIS Workshop (89)
- Psychology Faculty Publications (89)
- Masters Theses & Specialist Projects (74)
-
- Dissertations, Theses, and Capstone Projects (59)
- Dissertations (57)
- Masters Theses (44)
- Publications and Research (44)
- Honors Theses (43)
- Research Collection School of Social Sciences (42)
- Graduate Theses and Dissertations (41)
- Theses and Dissertations (41)
- Dissertations and Theses (39)
- Electronic Theses and Dissertations (39)
- Theses and Dissertations (Comprehensive) (35)
- Psychology Faculty Articles and Research (33)
- CONSCIOUSNESS: Ideas and Research for the Twenty-First Century (31)
- RISK: Health, Safety & Environment (1990-2002) (31)
- Graduate Theses (25)
- Honors Undergraduate Theses (25)
- Jeffrey Stevens Publications (24)
- Research Horizons Day Posters (24)
- International Bulletin of Political Psychology (23)
- All Master's Theses (21)
- Electronic Theses, Projects, and Dissertations (21)
- Faculty, Staff and Students Publications (20)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (20)
- Psychology Theses & Dissertations (19)
- Selected Works Temporary Series (18)
- Publication Type
Articles 2641 - 2670 of 2996
Full-Text Articles in Cognition and Perception
We've Thrown Away The Pens, But Are They Learning? Using Blogs In Higher Education, Katrina Strampel, Ron Oliver
We've Thrown Away The Pens, But Are They Learning? Using Blogs In Higher Education, Katrina Strampel, Ron Oliver
Research outputs pre 2011
In today’s university classrooms, “the time of restricting students products and learning opportunities to ink on paper are past” (Siegle, 2007). Blogs are only one of many computer-mediated technologies starting to dominate blended and wholly online courses. Most people assume that using these technologies, because it is what the students want, will translate into increased learning opportunities. As the literature continuously asserts, however, learning, and especially reflection, does not just happen (Boud, Keogh, & Walker, 1985). It seems imperative, therefore, that extra measures are taken when any technology is being implemented in a university classroom to ensure high levels of …
On Being A Mindful Authoritarian: Is Need For Cognition Always Associated With Greater Tolerance Of Deviant And Stigmatized Groups?, Kim-Pong Tam, Angela K. Y. Leung, Chi-Yue Chiu
On Being A Mindful Authoritarian: Is Need For Cognition Always Associated With Greater Tolerance Of Deviant And Stigmatized Groups?, Kim-Pong Tam, Angela K. Y. Leung, Chi-Yue Chiu
Research Collection School of Social Sciences
Previous research shows that the motivation to be mindful is associated with less intolerance toward deviant and stigmatized groups. The present research examines authoritarianism as a possible moderator of this seemingly robust finding. We obtained consistent evidence from two studies that authoritarianism (right-wing authoritarianism, social dominance orientation) moderates the relationship between need for cognition and punitiveness. Among low authoritarians, need for cognition was negatively associated with punitiveness and dispositional attribution of crimes and positively associated with support for rehabilitation of criminals. However, among high authoritarians, the pattern reversed. These results are discussed in the context of some recent advances in …
The Effects Of Domain Knowledge And Scene Content On Change Detection Using A Change Blindness Paradigm, Marianne T. Baskin
The Effects Of Domain Knowledge And Scene Content On Change Detection Using A Change Blindness Paradigm, Marianne T. Baskin
Master's Theses - Daytona Beach
This thesis was designed to determine how domain knowledge or scene content affects change detection. Twenty-four participants of medical professionals and non-medical professionals performed a change detection task using a flicker paradigm intended to be similar to saccadic movements or blinks. Each participant viewed 24 pictures on a computer screen, each picture flickering with a blank gray screen alternating between the original and modified version of the picture, and was asked to indicate when a change was detected by depressing a key. Twelve of the pictures were medical X-rays while the other 12 were everyday scenes. Reaction time, number of …
The Effects Of Acute Nicotine Abstinence On Vigilance And Verbal Memory In Non-Diagnosed Smokers, David W. Ayer
The Effects Of Acute Nicotine Abstinence On Vigilance And Verbal Memory In Non-Diagnosed Smokers, David W. Ayer
Dissertations
Research has shown a differential prevalence of smoking in the schizophrenic population compared to other psychiatric and non-diagnosed populations. The three most commonly investigated reasons for this differential prevalence in schizophrenics are: the self-medication hypothesis, side effects hypothesis, and sociological hypothesis. The self-medication hypothesis which proposes that schizophrenics smoke at a higher rate to ameliorate cognitive deficits is the most substantiated by the research. Of current interest is the possible role of nicotine in improving performance on vigilance and verbal memory, the two areas shown to be most related to impaired social functioning in schizophrenics. It is difficult to make …
Is It A European Car Or A Japanese Car? An Erp Study Of Diagnostic Information Use In Visual Expertise, Assaf Harel, Shlomo Bentin
Is It A European Car Or A Japanese Car? An Erp Study Of Diagnostic Information Use In Visual Expertise, Assaf Harel, Shlomo Bentin
Psychology Faculty Publications
No abstract provided.
Phonological Facilitation Through Translation In A Bilingual Picture-Naming Task, Paul Amrhein, Aimee Knupsky
Phonological Facilitation Through Translation In A Bilingual Picture-Naming Task, Paul Amrhein, Aimee Knupsky
Department of Psychology Faculty Scholarship and Creative Works
We present a critical examination of phonological effects in a picture-word interference task. Using a methodology minimizing stimulus repetition, English/Spanish and Spanish/English bilinguals named pictures in either L1 or L2 (blocked contexts) or in both (mixed contexts) while ignoring word distractors in L1 or L2. Distractors were either phonologically related to the picture name (direct; FISH–fist), or related through translation to the picture name (TT; LEG–milk–leche), or they were unrelated (bear–peach). Results demonstrate robust activation of phonological representations by translation equivalents of word distractors. Although both direct and TT distractors facilitated naming, TT facilitation was more consistent in L2 naming …
Challenges Facing A Complementary-Systems Approach To Abstract And Episodic Speech Perception, Conor T. Mclennan
Challenges Facing A Complementary-Systems Approach To Abstract And Episodic Speech Perception, Conor T. Mclennan
Psychology Faculty Publications
It has been nearly a decade since the publication of
Goldinger’s [4] Psych. Review paper in which he
presented his episodic theory of lexical access.
Moreover, Goldinger’s (and others’) empirical
work [3, 14] providing evidence for episodic
representations predates the formal presentation of
his episodic theory. This is an appropriate time to
note how the field has progressed in the past decade
with respect to the debate over the nature of lexical
representations. As evidenced by the two main
papers, the emphasis is no longer on whether there
are abstract and/or episodic representations. Instead,
the focus is now on the …
Phobias: The Evolutionary Trend, Grant Brown
Phobias: The Evolutionary Trend, Grant Brown
Honors Capstones
Capstone submitted as a graduation requirement for the BSU Honors Program.
Perceived Desirability Of Given Names: Identifying A Relationship Between Given Names And Associated Personality Traits, Ellen D. Parks
Perceived Desirability Of Given Names: Identifying A Relationship Between Given Names And Associated Personality Traits, Ellen D. Parks
Undergraduate Theses and Capstone Projects
This study was designed to determine whether participants would have better recall for names with phonetic properties that matched a paired personality trait. In other words, phonetically attractive names paired with positive traits and phonetically unattractive names paired with negative traits should have higher rates of recall than names whose phonetic properties did not match a paired personality trait, such as phonetically attractive names paired with negative traits or phonetically unattractive names paired with positive traits. Given names were deemed to be phonetically attractive or unattractive based on the number of sonorants (soft consonant sounds such as l, m, n, …
The Social Construction Of Authorship: An Investigation Of Subjectivity And Rhetorical Authority In The College Writing Classroom, Johannah Rodgers
The Social Construction Of Authorship: An Investigation Of Subjectivity And Rhetorical Authority In The College Writing Classroom, Johannah Rodgers
Dissertations, Theses, and Capstone Projects
Although we use the term author on a daily basis to refer to certain individuals, bodies of work, and systems of ideas, as Michel Foucault and other critics have pointed out, attempting to answer the question “What is an Author?” is by no means a simple proposition. And, starting from the position that there is no single, or definitive answer to this complex question, this dissertation seeks to contribute to the ongoing discussion of the genealogy of authorship by investigating the ways in which conceptions of the author have informed models of the writing subject in the field of rhetoric …
Maintenance Of Visual Stability In The Human Posterior Parietal Cortex, Erik Chang, Tony Ro
Maintenance Of Visual Stability In The Human Posterior Parietal Cortex, Erik Chang, Tony Ro
Publications and Research
Visual stability refers to our stable visuospatial perceptions despite the unstable visual input caused by saccades. Functional neuroimaging results, studies on patients with posterior parietal cortex (PPC) lesions, and single-unit recordings in the lateral intraparietal sulcus of primates indirectly suggest that the PPC might be a potential locus of visual stability through its involvement with spatial remapping. Here we directly explored the role of the PPC in visual stability by applying transcranial magnetic stimulation (TMS) while participants performed a perisaccadic displacement detection task. We show that TMS over the PPC but not a frontal control site alters sensitivity to displacement …
Un Proyecto De Educacion Ambiental En Torno A La Sequia En Chihuahua: Proceso, Resultados Y Aplicaciones Ulteriores (An Environmental Education Project In The Context Of Drought In Chihuahua: Process, Results And Ulterior Applications), Sara Soledad Garcia, V. Reyes, P. Ocha Tovar
Un Proyecto De Educacion Ambiental En Torno A La Sequia En Chihuahua: Proceso, Resultados Y Aplicaciones Ulteriores (An Environmental Education Project In The Context Of Drought In Chihuahua: Process, Results And Ulterior Applications), Sara Soledad Garcia, V. Reyes, P. Ocha Tovar
Teacher Education
No abstract provided.
The Case Against Dog Breed Discrimination By Homeowners’ Insurance Companies, Larry Cunningham
The Case Against Dog Breed Discrimination By Homeowners’ Insurance Companies, Larry Cunningham
State of the Animals 2007
Breed discrimination by insurance companies is on the rise in the United States. Insurers are refusing to write homeowners’ policies for people who own breeds that the insurance industry considers to be dangerous. Their decisions are based solely on the breed of the animal, not the individual characteristics of the particular dog. Dog bites are certainly a public health concern. However, the insurance industry’s approach to the problem is based on faulty assumptions and improper use of dog-bite statistics. The insurance industry has prejudged entire breeds of dogs as being “too risky,” instead of taking a more reasonable dog-by-dog approach …
Delgadina: Un Imaginario Colectivo Sin Fronteras (Delgadina: A Collective Imaginary Without Borders), Sara Soledad Garcia
Delgadina: Un Imaginario Colectivo Sin Fronteras (Delgadina: A Collective Imaginary Without Borders), Sara Soledad Garcia
Teacher Education
Este ensayo examina la variante y la recepción del romance ''Delgadina" transmutado en un corrido/canción popular mexicana entre la frontera de Mexico y los Estados Unidos, especificamente en las regiones de Chihuahua y El Paso, Texas. Reconociendo la importancia de los estudios anteriores hechos por Beatriz Mariscal acerca de las variantes del romance "Delgadina", recopiladas en El Cancionero General de Cuba(1) , y la interpretación feminista de Maria Herrera Sobek(2), el presente trabajo se ha propuesto abrir nuevas dimensiones en el estudio de este romance tratando sus variantes, su recepción e interpretación en la frontera. Se trata de un intento …
Real-World Face Recognition: The Importance Of Surface Reflectance Properties, Richard Russell, Pawan Sinha
Real-World Face Recognition: The Importance Of Surface Reflectance Properties, Richard Russell, Pawan Sinha
Psychology Faculty Publications
The face recognition task we perform most often in everyday experience is the identification of people with whom we are familiar. However, because of logistical challenges, most studies focus on unfamiliar-face recognition, wherein subjects are asked to match or remember images of unfamiliar people's faces. Here we explore the importance of two facial attributes - shape and surface reflectance - in the context of a familiar-face recognition task. In our experiment, subjects were asked to recognise color images of the faces of their friends. The images were manipulated such that only reflectance or only shape information was useful for recognizing …
Beauty Is In The ‘We’ Of The Beholder: Greater Agreement On Facial Attractiveness Among Close Relations, P Matthew Bronstad, Richard Russell
Beauty Is In The ‘We’ Of The Beholder: Greater Agreement On Facial Attractiveness Among Close Relations, P Matthew Bronstad, Richard Russell
Psychology Faculty Publications
Scientific research on facial attractiveness has focused primarily on elucidating universal factors to which all raters respond consistently. However, recent work has shown that there is also substantial disagreement between raters, highlighting the importance of determining how attractiveness preferences vary among different individuals. We conducted a typical attractiveness ratings study, but took the unusual step of recruiting pairs of subjects who were spouses, siblings, or close friends. The agreement between pairs of affiliated friends, siblings, and spouses was significantly greater than between pairs of strangers drawn from the same race and culture, providing evidence that facial-attractiveness preferences are socially organized.
Gender And Other Social Effects In People’S Perceptions Of Domesticated Animals, Clayton Wagner Bell, A. Hayden Brown
Gender And Other Social Effects In People’S Perceptions Of Domesticated Animals, Clayton Wagner Bell, A. Hayden Brown
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
It is no secret that people possess radically differing opinions and philosophical beliefs regarding domesticated animals. These contradictory perceptions are especially evident when examining people’s thoughts regarding the mental capabilities of animals and issues related to animal welfare. To determine whether or not gender and social environments play a role in these various perceptions, a survey was formulated and randomly distributed to 1000 undergraduate students across the University of Arkansas campus. Upon examination of the survey results, some very intriguing correlations became apparent. Of particular interest were the differences between the perceptions of males and females regarding domesticated animals. Women …
Social Attributions Of Asymptomatic Women Towards Anorexia Nervosa: A Qualitative Study, Natalie Mcdonald
Social Attributions Of Asymptomatic Women Towards Anorexia Nervosa: A Qualitative Study, Natalie Mcdonald
Theses : Honours
Anorexia nervosa (AN) has been identified as a complex, potentially lethal medical and psychological disorder, typically associated with a poor prognosis (Nordbo, Espeset, Gulliksen, Skarderud, & Holte, 2006; Signorini, De Filippo, Panico, De Caprio, Pasanisi, & Contaldo, 2007, 2007; Strober, Freeman, Lampert, Diamond, Teplinsky, & DeAntonio, 2006). The current review highlights the social and psychological elements attributed to AN by sufferers (Kelley, 1973; Nordbo et al., 2006; Woolrich, Cooper, & Turner, 2006), and through a social-cognitive explanation of attribution theory, identified the conceptual relevance of lay attributions towards AN and the lack of researched connection between the two concepts (Furnham …
Individual Differences And The Impact Of Forward And Backward Causal Relations On The Online Processing Of Narratives, Stephen W. Briner, Christopher A. Kurby, Danielle S. Mcnamara
Individual Differences And The Impact Of Forward And Backward Causal Relations On The Online Processing Of Narratives, Stephen W. Briner, Christopher A. Kurby, Danielle S. Mcnamara
Psychology Faculty Publications
This paper investigated the impact of causality on reading time by examining the contributions of forward antecedent and backward consequence connections. Undergraduate students read four narrative texts, sentence by sentence. Reading times for each sentence were regressed onto the number of antecedents connecting forward to a sentence and backward to prior sentences. Overall, forward antecedents and backward consequences explained unique variance in reading times, with increases in antecedents and consequences predicting decreases in reading time. However, causal consequences did not contribute unique variance to participants with higher literature knowledge. Further, the presence of forward antecedents significantly attenuated reading time differences …
Audiovisual Speech Perception: A Speech Production Approach, Michelle A. Jarick
Audiovisual Speech Perception: A Speech Production Approach, Michelle A. Jarick
Theses and Dissertations (Comprehensive)
The purpose of these studies was to test the main assumptions outlined in the Motor Theory of speech perception that (1) speech perception is linked to speech production, (2) audiovisual integration of speech occurs automatically and after the motor commands are activated, and (3) we perceive the intended gestures, which are extracted by a specialized ‘phonetic module’ in the brain. In Experiment 1, we used a Stroop-like paradigm, where participants viewed and listened to a speaker producing speech syllables (/aba/ or /aga/) in three conditions: audio-only, visual-only, and audiovisual. Participants were asked to ignore irrelevant speech stimuli, and to identify …
Memory For Non-Focal Words, John Jones
Memory For Non-Focal Words, John Jones
Masters Theses & Specialist Projects
In two experiments a modified flanker paradigm was used to simultaneously present a focal word and an incidental non-focal word. The participants' task was to process the focal word in one of two conditions: naming aloud or a conceptual decision (concrete or abstract). The focal and non-focal words were either semantically related or not. Participants were instructed to direct their attention at the focal word. Furthermore, the presentation of the focal word was brief to reduce the possibility of eye movement to the non-focal word. Memory was measured with implicit and explicit memory tests. Evidence was found to suggest implicit …
Relationships In Aging, Cognitive Processes, And Contingency Learning, Sarah Reeder
Relationships In Aging, Cognitive Processes, And Contingency Learning, Sarah Reeder
Masters Theses & Specialist Projects
This study investigated the influence of age, processing speed, working memory,and associative processes on the acquisition of contingency information. Young and older adults completed positive (+.65) and negative (-.65) contingency tasks that measured their ability to discover the relationship between a symptom (e.g., FEVER) and a fictional disease (e.g., OLYALGIA). Both d' scores, i.e., contingency learning, and contingency estimates, i.e., contingency judgment, were examined. Participants were also asked to complete cognitive tasks that measure the constructs of processing speed, working memory resources, associative memory, and associative learning. Structural equation modeling was used to examine the direct and indirect relationships between …
Audio Narration And Reading Ability In Programmed Instruction, Wendy Jaehnig
Audio Narration And Reading Ability In Programmed Instruction, Wendy Jaehnig
Dissertations
This study compared the effects of audio, textual, and audio-textual narration in a programmed instructional module on the performance of individuals with different reading abilities. One hundred eighty-four college students were randomly assigned to audio, textual, or audio-narration. Dependent variables were posttest score and instruction completion time. An ANCOVA was used to analyze the results, with ACT reading test scores as the covariate. No differences were found between the groups on posttest scores (p = .56) or completion time (p = .90), and there was no interaction between narration type and reading score for either dependent variable. Audio …
Aging And Associative And Inductive Reasoning Processes In Discrimination Learning, Courtney Ortz
Aging And Associative And Inductive Reasoning Processes In Discrimination Learning, Courtney Ortz
Masters Theses & Specialist Projects
The purpose of this study was to investigate how associative and inductive reasoning processes develop over trials in feature positive (FP) and feature negative (FN) discrimination learning. Younger and older adults completed initial and transfer tasks with either consistent or inconsistent transfer. Participants articulated a rule on every trial. The measure of discrimination learning was the number of trials it took participants to articulate the exact rule. In the initial task, older adults articulated the rule more slowly than younger adults in FP discrimination and took marginally more trials to articulate the rule in FN discrimination than younger adults. Age …
Memory & Cognition: What Difference Does Gender Make?, Donna J. Bridge
Memory & Cognition: What Difference Does Gender Make?, Donna J. Bridge
Renée Crown University Honors Thesis Projects - All
Small but significant gender differences, typically favoring women, have previously been observed in experiments measuring human episodic memory performance. In three studies measuring episodic memory, we compared performance levels for men and women. Secondary analysis from a pairedassociate learning task revealed a superior ability for women to learn single function pairs (i.e. words that are represented in only one pair), but performance levels for double function pairs (i.e. pairs that contain words that are also used in one other pair) were similar for men and women. We also reanalyzed data from a recognition experiment that used pictures as stimuli, and …
Explorations Of Self: A Philosophical Inquiry, Meredith Rathbun
Explorations Of Self: A Philosophical Inquiry, Meredith Rathbun
Senior Honors Projects
Asking “Who am I?” seems to be something that everybody ponders. This concept of “I”—what is it? We all have an individual and unique “I”—something that has been with each of us since birth, something that has changed and grown, but also stayed the same in many ways. My question “What is The Self?” is imperative. What is it that experiences life, if not The Self? When a 99-year-old man watches his last sunset, reflecting on his life, what inside of him is doing that reflecting? As you read my ideas on this page, what inside of you is processing …
Investigating The Effects Of Real-Time Visual Feedback On Computer Workstation Posture, Sigurdur Oli Sigurdsson
Investigating The Effects Of Real-Time Visual Feedback On Computer Workstation Posture, Sigurdur Oli Sigurdsson
Dissertations
The purpose of this study was to examine the effects of a package intervention that included discrimination training, real-time visual feedback, and self-monitoring on postural behavior at a computer workstation in a simulated office environment. A total of 21 participants were screened for participation, and eight of those participated throughout the study. A non-concurrent multiple baseline design across participants was used to assess the effects of the interventions across three postural variables. Following an information-only phase, participants were exposed to the intervention for the lowest stable postural variable. For most targeted postural variables, the intervention implemented in this study led …
Building The Emotionally Learned Negotiator, Erin Ryan
Building The Emotionally Learned Negotiator, Erin Ryan
Faculty Publications
No abstract provided.
The Love Styles And Reactions To Romantic Betrayal, Melissa R. Bausmer
The Love Styles And Reactions To Romantic Betrayal, Melissa R. Bausmer
Morehead State Theses and Dissertations
A thesis presented to the faculty of the College of Science and Technology at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science by Melissa R. Bausmer in January of 2006.
Is Pigmentation Important For Face Recognition? Evidence From Contrast Negation, Richard Russell, Pawan Sinha, Irving Biederman, Marissa Nederhouser
Is Pigmentation Important For Face Recognition? Evidence From Contrast Negation, Richard Russell, Pawan Sinha, Irving Biederman, Marissa Nederhouser
Psychology Faculty Publications
It is extraordinarily difficult to recognize a face in an image with negated contrast, as in a photographic negative. The variation among faces can be partitioned into two general sources: (a) shape and (b) surface reflectance, here termed 'pigmentation'. To determine whether negation differentially affects the processing of shape or pigmentation, we made two sets of faces where the individual faces differed only in shape in one set and only in pigmentation in the other. Surprisingly, matching performance was significantly impaired by contrast negation only when the faces varied in pigmentation. This provides evidence that the perception of pigmentation, not …