Factorial effects in the categorization of externally distributed stimulus samples

On each trial a sample point randomly drawn from one of two normal probability distributions was exhibited to S, who had to guess whether the sample was a “1” or a “2.” He was then given feedback, which was determined by which of the two distributions the sample point derived from. Two continua were employed: dot position on a file card, and groyness of square in. patches. Three levels of d’ were employed. The function giving the probability of a response “1” for different sample values was sharper for the higher d’ conditions, and for the dot position continuum. Cessation of feedback resulted in improved performance for the low d’ condition. Incentive payoff, confidence ratings, and experimenter had virtually no effects on task performance.     

The Effect of Evidential Impact on Perceptual Probabilistic Judgments

In a series of three behavioral experiments, we found a systematic distortion of probability judgments concerning elementary visual stimuli. Participants were briefly shown a set of figures that had two features (e.g., a geometric shape and a color) with two possible values each (e.g., triangle or circle and black or white). A figure was then drawn, and participants were informed about the value of one of its features (e.g., that the figure was a “circle”) and had to predict the value of the other feature (e.g., whether the figure was “black” or “white”). We repeated this procedure for various sets of figures and, by varying the statistical association between features in the sets, we manipulated the probability of a feature given the evidence of another (e.g., the posterior probability of hypothesis “black” given the evidence “circle”) as well as the support provided by a feature to another (e.g., the impact, or confirmation, of evidence “circle” on the hypothesis “black”). Results indicated that participants’ judgments were deeply affected by impact, although they only should have depended on the probability distributions over the features, and that the dissociation between evidential impact and posterior probability increased the number of errors. The implications of these findings for lower and higher level cognitive models are discussed.     

Rule identity classification of name and shape stimuli

Displays consisting of two names, two shapes, or a name printed inside a shape, were classified by the report “Yes” if both components were ‘compact’ (square or cirle combinations) or if both were ‘elongated’ (ellipse and oblong combinations). Displayswhich did not conform to this rule were classified by the report “No”. An analysis of “Yes” RTs indicated that name-name combinations were classified rapidly at a physical identity level, but relatively slowly at the rule identity level. “No” RTs to name-name displays were significantly slower than RTs to shape-shape or name-shape displays. However, “No” RTs were not delayed when the display components were visually similar. These results are discussed in relation to some current theories about the semantic representation of object names.     

When figure-ground segmentation modulates brightness: the case of phantom illumination

In the phantom illumination illusion, luminance ramps ranging from black to white induce a brightness enhancement on an otherwise homogeneous dark background. The strength of the illusion was tested with regard to the extension of the brightness inducing perimeter, surrounding the target area by manipulating the number of inducers (exp. 1) and the size of the inducers (exp. 2). Participants' task was to rate the difference in brightness between the target area and the background. Results show that the illusion occurs only when the target area is not completely segregated from the background by luminance ramps; vice versa, when the target area is delimited by a continuous gradient, it appears darker than the background. These findings suggest a major role of figure-ground organization in the appearance of the illusion. This hypothesis was tested in a rating task experiment with three types of target area shapes circumscribed by four types of edges: luminance contours, illusory contours, no contours, and ambiguous contours. Illusory contours, just as luminance contours, hinder the illusion and produce a darkening of the target area. A control experiment measured the brightness of the previous stimuli without luminance ramps: all configurations resulted in a darkening of the target area. Results from all experiments suggest that figure-ground segmentation plays a major role in the determination of both illumination and lightness in stimuli with luminance gradients.     

Contradictory Information: Too Much of a Good Thing

Both I and Belnap, motivated the “Belnap-Dunn 4-valued Logic” by talk of the reasoner being simply “told true” (T), and simply “told false” (F), which leaves the options of being neither “told true” nor “told false” (N), and being both “told true” and “told false” (B). Belnap motivated these notions by consideration of unstructured databases that allow for negative information as well as positive information (even when they conflict). We now experience this on a daily basis with the Web. But the 4-valued logic is deductive in nature, and its matrix is discrete: there are just four values. In this paper I investigate embedding the 4-valued logic into a context of probability. Jøsang’s Subjective Logic introduced uncertainty to allow for degrees of belief, disbelief, and uncertainty. We extend this so as to allow for two kinds of uncertainty—that in which the reasoner has too little information (ignorance) and that in which the reasoner has too much information (conflicted). Jøsang’s “Opinion Triangle” becomes an “Opinion Tetrahedron” and the 4-values can be seen as its vertices. I make/prove various observations concerning the relation of non-classical “probability” to non-classical logic.     

“Memory of Water” Without Water: Modeling of Benveniste’s Experiments with a Personalist Interpretation of Probability

Benveniste’s experiments were at the origin of a scientific controversy that has never been satisfactorily resolved. Hypotheses based on modifications of water structure that were proposed to explain these experiments (“memory of water”) were generally considered as quite improbable. In the present paper, we show that Benveniste’s experiments violated the law of total probability, one of the pillars of classical probability theory. Although this could suggest that quantum logic was at work, the decoherence process is however at first sight an obstacle to describe this macroscopic experimental situation. Based on the principles of a personalist view of probability (quantum Bayesianism or QBism), a modeling could nevertheless be built that fitted the outcomes reported in Benveniste’s experiments. Indeed, in QBism, there is no split between microscopic and macroscopic, but between the world where an agent lives and his internal experience of that world. The outcome of an experiment is thus displaced from the object to its perception by an agent. By taking into account both the personalist view of probability and measurement fluctuations, all characteristics of Benveniste’s experiments could be described in a simple modeling: change of the biological system from resting state to “activated” state, concordance of “expected” and observed outcomes and apparent “jumping” of “biological activities” from sample to sample. No hypothesis on change of water structure was necessary. In conclusion, a modeling of Benveniste’s experiments based on a personalist view of probability offers for the first time a logical framework for these experiments that have remained controversial and paradoxical till date.     

Effects of absolute luminance and luminance contrast on visual discrimination in low mesopic environments

Recent research revealed considerable decline in visual perception under low luminance conditions. However, systematic studies on how visual performance is affected by absolute luminance and luminance contrast under low mesopic conditions (<0.5 cd/m²) is lacking. We examined performance in a simple visual discrimination task under low mesopic luminance conditions in three experiments in which we systematically varied base luminance and luminance contrast between stimulus and background. We further manipulated eccentricity of the stimuli because of known rods and cones gradients along the retina. We identified a “deficiency window” for performance as measured by d’ when luminance was < 0.06 cd/m² and luminance contrast as measured by the luminance ratio between stimulus and background was below < 1.7. We further calculated performance-based luminance as well as contrast efficiency functions for reaction times (RTs). These power functions demonstrate the contrast asymptote needed to decrease RTs and how such a decrease can be achieved given various combinations of absolute luminance and luminance contrast manipulations. Increased eccentricity resulted in slower RTs indicative of longer scan distances. Our data provide initial insights to performance-based efficiency functions in low mesopic environments that are currently lacking and to the physical mechanisms being utilized for visual perception in these extreme environments.     

Metacognition in psychophysical judgment: An unfolding view of comparative judgments of mental workload

An experiment is reported in which it was found that when subjects were required to indicate which of two visual extents was more difficult to categorize as “long” or “short,” they executed these categorizations and then measured the distance of the representation of each stimulus from the long-short category boundary; the stimulus nearer the boundary was judged to be the more difficult. When they were requested to indicate which was easier to categorize, they selected the alternative that was farther. Coombs’s theory of data (1952, 1964) and his unfolding theory of preferential choice (1950, 1964) provided the conceptualization of metacognition in this psychophysical task context. Strong support for the probabilisitic version of unfolding theory was obtained from the observed selective effects of laterality on the levels of stochastic transitivity attained for various classes of triples and the reliably longer times for comparisons with bilateral pairs than with unilateral pairs. The semantic congruity effects obtained, together with the changes in the form of the relationship between probability and response time as a function of practice, can be best accounted for by an evidence accrual theory in which the distances from the active reference point are measured and compared with a criterion on each evidence accrual. No support is provided for the view that propositionally based semantic “ease”- “difficulty” codes serve as the basis for these metacognitive comparative judgments of ease and difficulty.     

Perception of two-dimensional Markov constraints within visual displays

A method is described for constructing visual displays in which statistical constraints are encoded within two spatial dimensions without introducing one-dimensional linear constraints. Within each local group of four elements, the state of one element was determined with a given probability by the previously generated states of the other three. Ss rated such displays on a scale from “lumpy” (or crude texture) to “lacy” (or even texture). The consistency of classification obtained for displays with strong aggregated (“lumpy”) properties was substantially higher than that obtained for displays with strong distributed (“lacy”) properties. An incidental feature of the Ss’ behavior was their deliberate degrading of the visual quality of the displays. Comparison is made with one-dimensional displays concatenated in two dimensions.     

The Factor Structure of the Spiritual Well-Being Scale in Veterans Experienced Chemical Weapon Exposure

This study aimed to determine the factor structure of the spiritual well-being among a sample of the Iranian veterans. In this methodological research, 211 male veterans of Iran–Iraq warfare completed the Paloutzian and Ellison spiritual well-being scale. Maximum likelihood (ML) with oblique rotation was used to assess domain structure of the spiritual well-being. The construct validity of the scale was assessed using confirmatory factor analysis (CFA), convergent validity, and discriminant validity. Reliability was evaluated with Cronbach’s alpha, Theta (θ), and McDonald Omega (Ω) coefficients, intra-class correlation coefficient (ICC), and construct reliability (CR). Results of ML and CFA suggested three factors which were labeled “relationship with God,” “belief in fate and destiny,” and “life optimism.” The ICC, coefficients of the internal consistency, and CR were >.7 for the factors of the scale. Convergent validity and discriminant validity did not fulfill the requirements. The Persian version of spiritual well-being scale demonstrated suitable validity and reliability among the veterans of Iran–Iraq warfare.     

Introduction to the Special Issue “Phenomenological Studies in Multidimensional Views”

How should Scheler’s critique of Kant’s ethics be interpreted? This paper focuses on two aspects of Scheler’s critique of Kant’s ethics: 1) the problem of “formalism” in Kant’s ethics, and 2) the problem of the “ethics of autonomy” and “ethics of heteronomy.” Generally speaking, Scheler’s project has a “modern” starting point; that is to say, his work starts with the rejection or critique of Kant and Aristotle. Most essentially, Scheler’s “material ethics of values” (ethics of person) must stay autonomous. Following Kant, Scheler takes Aristotle’s theory as an “ethics of heteronomy,” and then competes with Kant within the “ethics of autonomy” and further develops his own “ethics of personal autonomy.”     

Can normal narcissism be managed to promote green product purchases? Investigating a counterintuitive proposition

Despite the presumed influence of narcissism as a prevalent consumer trait, the psychological construct was only recently linked to consumer theory. “Normal” narcissism is traditionally associated with negative effects on others. But narcissism is examined from a different perspective here. This study investigates how narcissistic traits may influence consumer tendencies to engage in “green” behaviors. Study 1 demonstrates that narcissists do not intrinsically value green behavior or its potential societal benefits. However, four integrated experiments—grounded in costly signaling theory and the realistic accuracy model—demonstrated that situational factors such as product visibility, purchase visibility, relative price, and message detection and utilization could be influential in motivating normal narcissists to act “green.”     

Relevance differently affects the truth,acceptability, and probability evaluations of “and”, “but”, “therefore”, and “if–then”

In this study, we investigate the influence of reason-relation readings of indicative conditionals and “and”/“but”/“therefore” sentences on various cognitive assessments. According to the Frege–Grice tradition, a dissociation is expected. Specifically, differences in the reason-relation reading of these sentences should affect participants’ evaluations of their acceptability but not of their truth value. In two experiments we tested this assumption by introducing a relevance manipulation into the truth-table task as well as in other tasks assessing the participants’ acceptability and probability evaluations. Across the two experiments, a strong dissociation was found. The reason-relation reading of all four sentences strongly affected their probability and acceptability evaluations, but hardly affected their respective truth evaluations. Implications of this result for recent work on indicative conditionals are discussed.     

Listening for mispronunciations: A measure of what we hear during speech

Ss heard a passage from Lewis Carroll’s Through the Looking Glass and were asked to indicate, as quickly as possible, whenever they heard a mispronunciation. Mispronunciations were produced by changing one consonant sound in a three-syllable word by one, two, or four distinctive features (e.g., busily to “pizily,” “visily,” or “sizily”). Mispronunciations involving a single feature change were seldom detected, while two and four feature changes were readily detected. The syllable in which a mispronunciation occurred did not affect the probability of detecting a mispronunciation. However, reaction times to mispronounced words were at least a third of a second slower when they occurred in the-first syllable of the word. The results were taken to support the notion that words are identified by their distinctive features.     

Acquisition and decision in visual same-different search of letter displays

From 2 to 23 capital As, Bs, and Cs were positioned randomly over visual displays varying in sizefrom5 to 10deg square and in luminance from7 to 250cd/m², The task was to decide whether all letters were the same or one was different from the rest. Instructions stressed accuracy, and responses were 97% correct. Three experiments with 50 observers varied amount of practice, number of letters (N), and size and luminance of the display. All experiments produced a linear invariance between mean “same” \((\bar S)\) and mean “different” \((\bar D)\) response times in seconds with N as the parameter: \(\bar D\) ? \(\bar S\) /2+4. The data are consistent with Krueger’s same-different decision theory, and with the separation of acquisition from decision processes.     

Perceptions of sexual harassment as a function of sex of rater and incident form and consequence

The purpose of this study was to investigate differences in perceptions of two “severity dichotomies” present in the Equal Employment Opportunity Commission Guidelines on sexual harassment. Alale and female undergraduates (N = 198), from a predominately white midwestern university, were given one of four statements based on these guidelines, varying “form” (physical/verbal) and “consequence” (economic injury/hostile environment) of the behavior. Analysis of variance results showed females rated the incident as more definitely sexual harassment and as affecting perfonnance more than did males. Participants reading “economic injury” statements rated them as having more effect on the victim’s job status than did those reading “hostile environment” statements. A multivariate analysis of variance revealed significant “consequence” and “sex” effects on several factors: A significant three-way interaction showed that males rated statements less negatively than did females, especially when the statement described “physical” behavior with “hostile environment“ consequences. Cluster analysis results are also presented.     

Prism adaptation with simultaneous receipt of normal input

A 20-diopter vertically-displacing prism was worn on one eye in conjunction with plane glass on the other. Five groups ofSs differed in the density of a neutral filter worn over one eye. No aftereffect could be measured in either eye in any condition where the luminance of the “normal” field was equal to or greater than that of the prism field. As the luminance of the “normal” field is decreased below that of the prism field, the magnitude of aftereffect increases and is measurable in each eye.     

返回抑制时程的三因素理论及其发展

综述了返回抑制(Inhibition of return,IOR)出现时程机制的三因素理论内容,支持该理论的实验证据,以及对理论的质疑和发展。该理论认为空间定向收益、出现检测缺失和空间选择收益三个因素共同决定了IOR出现的时程及机制。研究者通过操控任务加工水平或将实验范式相结合的方式对三因素理论提出了质疑和发展。许多关键问题如三个因素存在的认知神经科学证据、出现检测缺失和空间选择收益发挥作用的方式等是未来研究的重点和方向。     

A Cluster Analytic Study of Clinical Orientations Among Chemical Dependency Counselors

Three distinct clinical orientations were identified in a sample of chemical dependency counselors (N = 406). Based on cluster analysis, the largest group, identified and labeled as “uniform counselors,” endorsed a simple, moral‐disease model with little interest in psychosocial interventions. A 2nd group, identified as “multiform counselors,” embraced an incongruent moral‐disease‐psychosocial model, and valued a myriad of treatment approaches. The smallest group, labeled “client‐directed counselors,” did not fully endorse Alcoholics Anonymous (AA) principles, valued non‐coercive treatment, and recognized coexisting psychopathology in clients. Results from a discriminant function analysis provided evidence to support the 3‐group cluster solution.