Beyond the illusion of structural change: A process priming approach to psychotherapy outcome research.

Psychoanalytically oriented psychotherapy outcome research has yet to differentiate between a psychological structure that is present but temporarily inactive and genuine change in that underlying structure. Thus, a decrease in maladaptive responding following treatment may sometimes reflect illusory structural change, with the patient remaining vulnerable to relapse in situations that activate the underlying pathogenic structure. Genuine structural change would be better assessed by deliberately seeking and failing to find evidence of the enduring presence of a pathogenic structure under conditions that typically activate that structure, using both implicit (e.g., free response) and explicit (self-report) outcome measures. Because implicit and explicit measures are differentially affected by situational variables (e.g., mood, mindset priming), rigorous psychotherapy research must use experimental techniques and multimodal assessments to assess outcome under the conditions most likely to evoke a pathological reaction in a seemingly recovered individual. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Visual 3D illusion: a systems-theoretical approach to psychosis

Binocular depth inversion represents an illusion of visual perception. Such an inversion does not occur in all cases, especially when objects with a higher degree of familiarity (e.g. photographs of faces) are displayed. Cognitive factors are assumed to override the binocular disparity cues of stereopsis. We tested the hypothesis that during psychotic and similar states the human CNS is unable to correct the implausible perceptual hypothesis. Measurements of binocular depth inversion in perception of 3D objects were performed in schizophrenic patients (n = 13), in patients with alcohol withdrawal (n = 10), in sleep-deprived medical staff (n = 10) and in healthy volunteers (n = 41). The binocular depth inversion scores were highly elevated in the patient group and in the sleep-deprivated medical staff in comparison with healthy volunteers. The data demonstrate that impairment of binocular depth inversion reflects a common final pathway, characterized by an impairment of adaptive systems regulating perception.     

Room tilt illusion. A central otolith dysfunction

BACKGROUND: We report a sudden 90 degrees room tilt illusion (RTI) following vestibular stimulation in 3 patients with persistent skew deviation caused by a brain stem lesion. Room tilt illusion is a transient tilt perception of the visual surrounding, on its side or even upside down, that is often reported with brain stem lesions. Although its pathophysiologic cause is not well known, the RTI suggests an impairment of otolith pathways, as reported in skew deviation. METHODS: The 3 patients with brain stem lesions were reexamined as part of a follow-up of patients with signs of otolith dysfunction. A registration of vestibular function was performed with a rotatory chair, including earth-vertical axis rotation for canal stimulation and off-vertical axis rotation (OVAR) for otolith stimulation. Measurement of the subjective visual vertical (SVV) was also performed. RESULTS: The otolith-ocular reflex registered by OVAR was impaired in the 3 patients with skew deviation and the SVV in 2 patients. After each direction of OVAR stimulation, the 3 patients reported an RTI as the room was illuminated. CONCLUSIONS: The coexistence of otolith oculomotor (skew deviation and impaired otolith-ocular reflex) and perceptual (tilt of SVV and RTI) disorders suggests a common otolith dysfunction. However, an RTI occurred specifically after vestibular stimulation and when the room was illuminated. We thus suggest that RTI reflects a dynamic visuo-otolith mismatch.     

Size illusion, distance illusion, and terrestrial passage: Comment on Reed.

Comments on C. F. Reed's (see record 1985-29807-001) terrestrial-passage theory, in which it is assumed that the moon's failure to increase in visual subtense while elevating is accounted for strictly by perceptual distancing. This allows a formal account of the moon distance illusion, but at the expense of a compelling explanation of the moon size illusion. In order to explain the distance illusion, Reed also assumes that all objects, regardless of their perceived altitude, are perceived to start from a common point at the horizon. Several alternative applications of Reed's terrestrial-passage foundation to the actual illusions are suggested. (8 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A halo visual illusion

A visual illusion consisting of transparent halos extending beyond the boundaries of rotating discs is reported. The effect can be obtained by rotating a variety of black-and-white discs at moderate speeds. It is not due solely to rods, as opposed to cones, and does not appear to be explainable in terms of intermittent stimulation of portions of visual fields of fixed visual angle.     

The illusion of intimacy: A Levinasian critique of evolutionary psychology.

While acknowledging the psychological experience of intimacy, evolutionary theory postulates proliferation as the underlying grounds for human relationships. Intimacy, according to evolutionary theory, is merely a psychological mechanism whereby sexual selection and parental investment are facilitated. Unfortunately, the assumption of an underlying evolutionary mechanism which governs human relationships including romantic love, jealousy, and parent–child bonds is fraught with problematic consequences. Unlike the evolutionary understanding of intimacy, the philosophy of E. Levinas (e.g., 1991) offers an alternative conceptualization in which human relationships themselves constitute the grounds of intimacy. This alternative conceptualization escapes the problematic consequences of evolutionary theory. Intimacy from this grounding is inextricably tied to the infinite obligation we take on in relation to others. Implications of this conceptualization are explored. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Rhyme priming of pictures and words: A lexical activation account.

Orthographically/phonologically related primes have typically been found to facilitate processing of target words. This phenomenon is usually explained in terms of spreading activation between nodes for orthographically/phonologically similar words in lexical memory. The phenomenon was explored in a series of studies involving the manipulations of prime and target type (word or picture) and prime and target task (naming or categorization). Generally, the results support the lexical activation explanation. Named primes, which activate lexical memory, facilitate processing in all target tasks involving lexical access (word and picture naming and word categorization), independent of prime type. Categorized primes show the expected Prime Type?×?Relatedness interaction with word primes, which activate lexical memory, producing much more facilitation than picture primes. Finally, unlike in semantic priming studies, increased depth of processing of a word prime decreased the size of the priming effects. Apparently, initial activation levels in lexical memory are not maintained when semantic processing of the prime is required. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Remembering pictures: Pleasure and arousal in memory.

Assessed incidental memory performance for pictures that varied along the affective dimensions of pleasantness and arousal. For both an immediate and delayed (1 yr later) free-recall task, only the arousal dimension had a stable effect on memory performance: Pictures rated as highly arousing were remembered better than low-arousal stimuli. This effect was corroborated in a speeded recognition test, in which high-arousal materials encoded earlier in the experiment produced faster reaction times (RTs) than their low-arousal counterparts. Pleasantness affected RT decisions only for pictures not encoded earlier. These results suggest that whereas both the dimensions of pleasantness and arousal are processed at initial encoding, long-term memory performance is mainly affected by arousal. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Recognizing words and pictures in sentence contexts: A test of lexical modularity.

Words or pictures completed sentence fragments to form coherent or incoherent sentences. Ss made lexical decisions about words and object decisions about pictures. Modality was blocked in Exp 1 and mixed in Exp 2. In both experiments there were similar effects of context for words and pictures, contrary to the hypothesis that lexical priming produces the sentence context effect. Mixed conditions produced longer response latencies than blocked conditions but did not interact with the context effect. The finding of no interaction between the effect of context and the mixed-blocked manipulation supports a version of lexical modularity in which context effects arise as a function of post-access integration processing. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A new analysis of life-span age trends in visual illusion.

Tested the magnitude of the over- and underestimated portions of the Ebbinghaus (Titchner circles) illusion in 688 Ss ranging in age from 5 to 70 yrs. Results indicate that the overestimated portion decreases while the underestimated portion yields increasing illusory distortion as a function of age. Both configurations produced nonlinear age trends. These results suggest that reports of inconsistent age trends in illusions may be the result of combining increasing and decreasing age functions found in some components of the same illusion configuration. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A curious illusion suggests complex cue interactions in distance perception.

Binocular perception of the distance to, and between, point light targets depends on vergence angle: Increasing vergence angle decreases apparent distance and vice versa. Placing a prism base out requires increased convergence for target fixation; base in requires decreased convergence: The triangulation account of distance perception predicts that apparent target distance should decrease and increase respectively. It was found that the results predicted from the triangulation account were not observed. Egocentric target distance was judged to be greater regardless of prism orientation or target distance. A heuristic model provided an explanation for this phenomenon and allowed for the prediction of modulations of the overestimate with simple manipulations of the viewing environment. Further experiments confirmed these predictions and demonstrated that the effects of the prism could be greatly attenuated by adding additional distance cues. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Directed forgetting: Comparing pictures and words.

The authors investigated directed forgetting as a function of the stimulus type (picture, word) presented at study and test. In an item-method directed forgetting task, study items were presented 1 at a time, each followed with equal probability by an instruction to remember or forget. Participants exhibited greater yes–no recognition of remember than forget items for each of the 4 study–test conditions (picture–picture, picture–word, word–word, word–picture). However, this difference was significantly smaller when pictures were studied than when words were studied. This finding demonstrates that the magnitude of the directed forgetting effect can be reduced by high item memorability, such as when the picture superiority effect is operating. This suggests caution in using pictures at study when the goal of an experiment is to examine potential group differences in the magnitude of the directed forgetting effect. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The tactile continuity illusion.

We can perceive the continuity of an object or event by integrating spatially/temporally discrete sensory inputs. The mechanism underlying this perception of continuity has intrigued many researchers and has been well documented in both the visual and auditory modalities. The present study shows for the first time to our knowledge that an illusion of continuity also occurs with vibrotactile stimulation. We found that when the brief temporal gaps inserted into a vibrotactile target were filled with vibrotactile noise, the target vibration was perceived to continue through the noise if the target vibration was sufficiently weak relative to the noise. It is important that the illusory continuity of the vibration cannot be distinguished from the physically continuous vibration. These results therefore suggest that the continuity illusion is common to multiple sensory modalities and that it reflects a fundamental principle of perception. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A simple but powerful theory of the moon illusion.

Modification of F. Restle's (1970) theory explains the moon illusion and related phenomena on the basis of three principles: (1) The apparent sizes of objects are their perceived visual angles. (2) The apparent size of the moon is determined by the ratio of the angular extent of the moon relative to the extents subtended by objects composing the surrounding context, such as the sky and things on the ground. (3) The visual extents subtended by common objects of a constant physical size decrease systematically with increasing distance from the observer. Further development of this theory requires specification of both the components of the surrounding context and their relative importance in determining the apparent size and distance of the moon. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Object constancy: The illusion of being seen.

Recent theoretical advances in the concept of object constancy have placed it in the context of the child's establishing a separate identity. Although these advances were partly the result of examining the child's growing abilities to evoke a mental image of the absent mother, constancy cannot be well understood as a type of mental representation. It more resembles an illusion, specifically the illusion that the mother is constantly available in her mirroring function. The child's sense of his or her own reality is born in the mother's affectively attuned mirroring, as nothing about the child is real for the child until first seen by the mother. The illusion of the constant object allows the child to construct a sense of his or her own separate reality. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Mentoring in research: A developmental approach.

Psychologists are frequently called on to mentor students, trainees, and early faculty in various aspects associated with research. Little formal training is provided to mentors on how to effectively and successfully mentor trainees at the various developmental levels of the training process. The authors apply a developmental focus to the mentoring relationship. The literature on research mentoring is reviewed, including a review of mentorship with women and ethnic minorities. The multiple roles and functions of mentorship for clinical researchers and research scientists also are explored. Finally, the authors provide a list of the top 6 skills and behaviors that enable successful mentoring. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Gist memory in Alzheimer's disease: Evidence from categorized pictures.

The authors investigated gist memory (the general meaning, idea, or gist conveyed by a collection of items) for categorized color photographs in patients with Alzheimer's disease (AD) using an experimental paradigm in which participants are instructed to respond "yes" when a test item fits with a previously studied category, regardless of whether the specific item was actually studied. Compared with controls, the patients endorsed fewer studied items and similar numbers of nonstudied lure items. After the authors corrected for the baseline false-alarm rate, the patients showed a lower level of endorsements for nonstudied lure items compared with that of controls, suggesting that their gist memory is impaired. Implications of these findings for understanding gist memory and response bias in patients with AD are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The illusion of reality: A review and integration of psychological research on hallucinations.

Hallucinations are among the most severe and puzzling forms of psychopathology. Although usually regarded as first-rank symptoms of schizophrenia, they are found in a wide range of medical and psychiatric conditions. Moreover, a substantial minority of otherwise normal individuals report hallucinatory experiences. The purpose of this article is to review the considerable research into the cognitive mechanisms underlying (particularly psychotic) hallucinations that has been carried out and to integrate this research within a general framework. The available evidence suggests that hallucinations result from a failure of the metacognitive skills involved in discriminating between self-generated and external sources of information. It is likely that different aspects of these skills are implicated in different types of hallucinatory experiences. Further research should focus on specific metacognitive deficits associated with different types of hallucinations and on treatment strategies designed to train hallucinators to reattribute thoughts to themselves. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Autokinetic illusion: A systematic review of theories, measures, and independent variables.

Attempts to show that in studies of the autokinetic illusion, if the interdependence of theories and measurement methods is first considered, a systematic account becomes possible. Measures based on direction reports are recommended because they describe a theoretically significant, unambiguous, immediately apparent aspect of the apparent movement. 2 new techniques based on this analysis are also described. The views developed are then applied to a review of experimental studies of the autokinetic illusion. Each type of independent variable is separately considered. The status of the 3 main current theories-outflow, eye movement, and sensory tonic-is related to this research as well as to other studies of the oculomotor system. (128 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)