scholarly journals Response bias in grouping

2004 ◽  
Vol 14 (27) ◽  
pp. 45-48
Author(s):  
Sergio Cesare Masin
Keyword(s):  
Response Bias ◽  
Perceptual Grouping ◽  
Surface Color ◽  
Empirical Results ◽  
Color Similarity

Surface color similarity may cause the perceptual grouping of uniform achromatic surfaces on an achromatic background both when the background is homogeneous and when the background contains achromatic context surfaces. Empirical results reported here show that the grouping response due to the similarity in color of test surfaces is also affected by context surfaces. It is proposed that this response bias results from interference of the grouping response caused by the similarity in color of test surfaces with an implicit grouping response caused by the similarity in color between context surfaces and test surfaces.

Time Course of Perceptual Grouping by Color

2003 ◽  
Vol 14 (1) ◽  
pp. 26-30 ◽  
Author(s):  
Melissa F. Schulz ◽  
Thomas Sanocki
Keyword(s):  
Depth Perception ◽  
Visual Processing ◽  
Perceptual Grouping ◽  
Retinal Image ◽  
Time Course ◽  
Amodal Completion ◽  
Stereoscopic Depth ◽  
Short Exposure ◽  
Surface Color ◽  
Color Similarity

Does perceptual grouping operate early or late in visual processing? One position is that the elements in perceptual layouts are grouped early in vision, by properties of the retinal image, before perceptual constancies have been determined. A second position is that perceptual grouping operates on a postconstancy representation, one that is available only after stereoscopic depth perception, lightness constancy, and amodal completion have occurred. The present experiments indicate that grouping can operate on both a precon-stancy representation and a postconstancy representation. Perceptual grouping was based on retinal color similarity at short exposure durations and based on surface color similarity at long durations. These results permit an integration of the preconstancy and postconstancy positions with regard to grouping by color.

Rediscovering the Past: Gustav Fechner and Signal Detection Theory

1994 ◽  
Vol 5 (6) ◽  
pp. 335-340 ◽  
Author(s):  
Stephen W. Link
Keyword(s):  
Signal Detection ◽  
Response Bias ◽  
Experimental Psychology ◽  
Signal Detection Theory ◽  
Detection Theory ◽  
Empirical Results ◽  
The Past

The origins of experimental psychology are found in the theory of discrimination created by Gustav Fechner The theory advanced by Fechner was the first theory of mental judgment that applied the ideas of Gaussian error to human discrimination Despite its powerful theoretical and empirical results, the theory vanished Later embellishments, such as the addition of response bias found in signal detection theory, gave such theories new life, but Fechner never received the credit due to the founder of psychological detection theory

scholarly journals Contingent Valuation: From Dubious to Hopeless

2012 ◽  
Vol 26 (4) ◽  
pp. 43-56 ◽  
Author(s):  
Jerry Hausman
Keyword(s):  
Willingness To Pay ◽  
Contingent Valuation ◽  
Response Bias ◽  
Willingness To Accept ◽  
Embedding Problem ◽  
Contingent Valuation Study ◽  
Empirical Results ◽  
Valuation Study ◽  
Contingent Valuation Methods

Approximately 20 years ago, Peter Diamond and I wrote an article for this journal analyzing contingent valuation methods. At that time Peter's view was that contingent valuation was hopeless, while I was dubious but somewhat more optimistic. But 20 years later, after millions of dollars of largely government-funded research, I have concluded that Peter's earlier position was correct and that contingent valuation is hopeless. In this paper, I selectively review the contingent valuation literature, focusing on empirical results. I find that three long-standing problems continue to exist: 1) hypothetical response bias that leads contingent valuation to overstatements of value; 2) large differences between willingness to pay and willingness to accept; and 3) the embedding problem which encompasses scope problems. The problems of embedding and scope are likely to be the most intractable. Indeed, I believe that respondents to contingent valuation surveys are often not responding out of stable or well-defined preferences, but are essentially inventing their answers on the fly, in a way which makes the resulting data useless for serious analysis. Finally, I offer a case study of a prominent contingent valuation study done by recognized experts in this approach, a study that should be only minimally affected by these concerns but in which the answers of respondents to the survey are implausible and inconsistent.

scholarly journals Grouping strategies in numerosity perception between intrinsic and extrinsic grouping cues

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yun Pan ◽  
Huanyu Yang ◽  
Mengmeng Li ◽  
Jian Zhang ◽  
Lihua Cui
Keyword(s):  
Perceptual Grouping ◽  
Large Set ◽  
Gestalt Theory ◽  
Telephone Number ◽  
Common Region ◽  
Visual Grouping ◽  
Grouping Strategies ◽  
Color Similarity ◽  
Numerosity Perception ◽  
Do So

AbstractThe number of items in an array can be quickly and accurately estimated by dividing the array into subgroups, in a strategy termed “groupitizing.” For example, when memorizing a telephone number, it is better to do so by divide the number into several segments. Different forms of visual grouping can affect the precision of the enumeration of a large set of items. Previous studies have found that when groupitizing, enumeration precision is improved by grouping arrays using visual proximity and color similarity. Based on Gestalt theory, Palmer (Cognit Psychol 24:436, 1992) divided perceptual grouping into intrinsic (e.g., proximity, similarity) and extrinsic (e.g., connectedness, common region) principles. Studies have investigated groupitizing effects on intrinsic grouping. However, to the best of our knowledge, no study has explored groupitizing effects for extrinsic grouping cues. Therefore, this study explored whether extrinsic grouping cues differed from intrinsic grouping cues for groupitizing effects in numerosity perception. The results showed that both extrinsic and intrinsic grouping cues improved enumeration precision. However, extrinsic grouping was more accurate in terms of the sensory precision of the numerosity perception.

Picture Recognition Errors in the Differential Diagnosis of Alzheimer’s Disease

2019 ◽  
Vol 30 (3) ◽  
pp. 157-168
Author(s):  
Helmut Hildebrandt ◽  
Jana Schill ◽  
Jana Bördgen ◽  
Andreas Kastrup ◽  
Paul Eling
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Differential Diagnosis ◽  
Clinical Diagnosis ◽  
Response Bias ◽  
Recognition Task ◽  
Discriminatory Power ◽  
False Alarms ◽  
Picture Recognition ◽  
Recognition Errors

Abstract. This article explores the possibility of differentiating between patients suffering from Alzheimer’s disease (AD) and patients with other kinds of dementia by focusing on false alarms (FAs) on a picture recognition task (PRT). In Study 1, we compared AD and non-AD patients on the PRT and found that FAs discriminate well between these groups. Study 2 served to improve the discriminatory power of the FA score on the picture recognition task by adding associated pairs. Here, too, the FA score differentiated well between AD and non-AD patients, though the discriminatory power did not improve. The findings suggest that AD patients show a liberal response bias. Taken together, these studies suggest that FAs in picture recognition are of major importance for the clinical diagnosis of AD.

The Persnickety Pervasiveness of Rating Enhancement in Personality Assessment

2020 ◽  
pp. 1-13
Author(s):  
Alicia A. Stachowski ◽  
John T. Kulas
Keyword(s):  
Response Bias ◽  
Personality Assessment ◽  
Current Paper ◽  
Psychological Measurement ◽  
Shared Sets ◽  
Self Reports ◽  
Original Target ◽  
Target Profile ◽  
Do So ◽  
Normative Influences

Abstract. The current paper explores whether self and observer reports of personality are properly viewed through a contrasting lens (as opposed to a more consonant framework). Specifically, we challenge the assumption that self-reports are more susceptible to certain forms of response bias than are informant reports. We do so by examining whether selves and observers are similarly or differently drawn to socially desirable and/or normative influences in personality assessment. Targets rated their own personalities and recommended another person to also do so along shared sets of items diversely contaminated with socially desirable content. The recommended informant then invited a third individual to additionally make ratings of the original target. Profile correlations, analysis of variances (ANOVAs), and simple patterns of agreement/disagreement consistently converged on a strong normative effect paralleling item desirability, with all three rater types exhibiting a tendency to reject socially undesirable descriptors while also endorsing desirable indicators. These tendencies were, in fact, more prominent for informants than they were for self-raters. In their entirety, our results provide a note of caution regarding the strategy of using non-self informants as a comforting comparative benchmark within psychological measurement applications.

Detection of Malingered Neurocognitive Dysfunction Among Patients with Acquired Brain Injuries

2013 ◽  
Vol 29 (4) ◽  
pp. 253-262 ◽  
Author(s):  
Omer Hegedish ◽  
Dan Hoofien
Keyword(s):  
Response Bias ◽  
Concurrent Validity ◽  
Convergent Validity ◽  
Brain Injuries ◽  
Neurocognitive Dysfunction ◽  
Word Memory Test ◽  
Malingered Neurocognitive Dysfunction ◽  
Compensation Seeking ◽  
Seeking Behavior ◽  
Verbal Test

The Word Memory Test (WMT) is one of the most sensitive forced-choice tests available designed to evaluate negative response bias (NRB). Presently there is no valid verbal test designed to evaluate NRB for Hebrew-speaking patients. The aims of the present study were to validate the response bias measures of the WMT among Hebrew-speaking patients with acquired brain injuries and to reveal the malingering base rate among Israeli patients involved in compensation-seeking. Participants were 112 patients. The Test of Memory Malingering (TOMM) was used for convergent validity and injury related variables were used for concurrent validity. A translated version of the WMT had high split-half reliability. Regarding convergent validity, WMT effort measures had high positive correlations with the TOMM. Moreover, based on TOMM cutoff scores for classification, the WMT had reasonable classification rates. Regarding concurrent validity, multivariate logistic regression revealed that failure in the WMT was significantly predicted by normal brainscans and involvement in compensation-seeking behavior. The baserate of probable malingering was 34%. These findings emphasize the universality of the WMT in detecting NRB and establishing a malingered neurocognitive dysfunction baserate among Israeli patients involved in compensation-seeking.

The Self-Description Questionnaire-1: A Lithuanian Application

1995 ◽  
Vol 11 (1) ◽  
pp. 41-51 ◽  
Author(s):  
David Watkins ◽  
Anne McCreary Juhasz ◽  
Aldona Walker ◽  
Nijole Janvlaitiene
Keyword(s):  
Eastern Europe ◽  
Factor Structure ◽  
Response Bias ◽  
Internal Consistency ◽  
Self Esteem ◽  
Cultural Dimensions ◽  
The Self ◽  
Nigerian Children ◽  
Gender Biases ◽  
And Gender

Analysis of the responses of 139 male and 83 female Lithuanian 12-14 year-olds to a translation of the Self-Description Questionnaire-1 (SDQ-1; Marsh, 1988 ) supported the internal consistency and factor structure of this instrument. Some evidence of a “positivity” response bias was found, however. Comparison of the Lithuanian responses to those of like-aged Australian, Chinese, Filipino, Nepalese, and Nigerian children indicated the Lithuanians tended to report rather lower self-esteem. The Lithuanian males also tended to report lower self-esteem than their female peers. Interpretation of the results are considered in terms of reactions to the recent upheavals in Eastern Europe, stable cultural dimensions, and possible cultural and gender biases in the items of the SDQ-1.

Dynamic Visual Noise Affects Visual Short-Term Memory for Surface Color, but not Spatial Location

2010 ◽  
Vol 57 (1) ◽  
pp. 17-26 ◽  
Author(s):  
Kevin Dent
Keyword(s):  
Short Term Memory ◽  
Spatial Location ◽  
Visual Noise ◽  
Dynamic Visual Noise ◽  
Short Term ◽  
Surface Color ◽  
Term Memory ◽  
Visual Short Term Memory ◽  
Experimental Tool ◽  
Spatial Locations

In two experiments participants retained a single color or a set of four spatial locations in memory. During a 5 s retention interval participants viewed either flickering dynamic visual noise or a static matrix pattern. In Experiment 1 memory was assessed using a recognition procedure, in which participants indicated if a particular test stimulus matched the memorized stimulus or not. In Experiment 2 participants attempted to either reproduce the locations or they picked the color from a whole range of possibilities. Both experiments revealed effects of dynamic visual noise (DVN) on memory for colors but not for locations. The implications of the results for theories of working memory and the methodological prospects for DVN as an experimental tool are discussed.

Neuroscience and Ethics

2017 ◽  
Vol 64 (2) ◽  
pp. 82-92 ◽  
Author(s):  
S. Matthew Liao
Keyword(s):  
Empirical Evidence ◽  
Moral Judgments ◽  
Empirical Results ◽  
Joshua Greene

Abstract. A number of people believe that results from neuroscience have the potential to settle seemingly intractable debates concerning the nature, practice, and reliability of moral judgments. In particular, Joshua Greene has argued that evidence from neuroscience can be used to advance the long-standing debate between consequentialism and deontology. This paper first argues that charitably interpreted, Greene’s neuroscientific evidence can contribute to substantive ethical discussions by being part of an epistemic debunking argument. It then argues that taken as an epistemic debunking argument, Greene’s argument falls short in undermining deontological judgments. Lastly, it proposes that accepting Greene’s methodology at face value, neuroimaging results may in fact call into question the reliability of consequentialist judgments. The upshot is that Greene’s empirical results do not undermine deontology and that Greene’s project points toward a way by which empirical evidence such as neuroscientific evidence can play a role in normative debates.

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