Audience-contingent variation in action demonstrations for humans and computers

People may exhibit two kinds of modifications when demonstrating action for others: modifications to facilitate bottom-up, or sensory-based processing; and modifications to facilitate top-down, or knowledge-based processing. The current study examined actors' production of such modifications in action demonstrations for audiences that differed in their capacity for intentional reasoning. Actors' demonstrations of complex actions for a non-anthropomorphic computer system and for people (adult and toddler) were compared. Evidence was found for greater highlighting of top-down modifications in the demonstrations for the human audiences versus the computer audience. Conversely, participants highlighted simple perceptual modifications for the computer audience, producing more punctuated and wider ranging motions. This study suggests that people consider differences in their audiences when demonstrating action.     

Modifications of neuromuscular activity and improvement in performance of a novel motor skill.

The relationship between the modifications in the myoclectrical activity after practice and the performance enhancement was examined regarding a ballistic movement of the elbow. 41 subjects practiced a novel throwing skill, which involved the throw of a ball, performing elbows flexion. Surface electromyograms of four muscles in the elbow region were analyzed, aiming at identifying the changes in the timing and the intensity of muscle activation that may account for improved performance. A repeated-measures analysis of variance identified an improvement in performance scores after practice and a significant decrease in the EMG for the agonists and the primary antagonist. Moreover, a significant increase in the delay of the activity onset in the antagonists was observed after practice. The variations of the EMG for the biceps brachii and the anconeus were significantly elated to improvement in performance. It was concluded that the modifications in the electrical activity of those to muscles were primarily responsible for the physical alterations associated with improved performance.     

Intellectual property and biotechnology: the U.S. internal experience--Part I

In the development of biotechnology in the United States, many questions were raised about the appropriateness of applying to this area a traditional robust system of intellectual property rights. Despite these hesitations, the U.S. rejected suggested modifications. This was a mistake, and there is a need to develop a modified system that promotes more of the relevant ethical values.     

Molar versus as a paradigm clash.

The molar view of behavior arose in response to the demonstrated inadequacy of explanations based on contiguity. Although Dinsmoor's (2001) modifications to two-factor theory render it irrefutable, a more basic criticism arises when we see that the molar and molecular views differ paradigmatically. The molar view has proven more productive.     

Exploring Modifications to Individual Trauma-Focused PTSD Treatments in a Routine Care Setting: An Examination of Medical Records at a Veterans Health Administration PTSD Clinic

Clinicians in naturalistic settings regularly modify the delivery of trauma-focused treatments to enhance client engagement and retention. However, what types of modifications are made in clinical settings, why, and when, and their impact on client outcomes has seldom been examined. As an initial step to address this, the current study applied elements of the updated Framework for Reporting Adaptations and Modifications—Expanded (FRAME; Wilstey Stirman et al., 2019) to examine content-level modifications documented in the delivery of posttraumatic stress disorder (PTSD) treatment to veterans via medical records review in an urban PTSD clinic. Results indicated that the updated FRAME suited the data well, and that modifications occurred in most veteran–clinician pairs over the course of treatment. The four most common modifications documented were spreading (27%), repeating (24%), drift with return (22%), and integrating (21%). Three composite case examples are discussed that describe the application of the most common modifications observed in medical record documentation. This is an important first step toward understanding the real-world modifications of evidence-based trauma-focused interventions that in turn will lead to critical recommendations for improving treatment implementation.     

Ethnocultural considerations in group psychotherapy.

The increasingly heterogeneous populations of the industrialized countries necessitate a reappraisal of the sociocultural norms and group-therapeutic approaches that were based primarily on White Judeo-Christian values. This author reviews the literature on the treatment of ethnically different patients and discusses socio-cultural phenomena relevant to group therapy that differ from the mainstream culture. The culturally determined contrasts in perception, attitude, communication, and behavior, which minority members may exhibit in the group, are examined. The specific demands on the therapist working with ethnic group members are highlighted along with the modifications in therapeutic technique. Recommendations for a culturally sensitive and broader training of group therapists are offered.     

A dynamic model for anomalous figures: the shape of line-induced brightness modifications.

It is recognized that a fundamental role in the perception of anomalous figures is played by the intensity and shape of brightness modifications induced by line ends. The aim of this work was to study the structure of these modifications experimentally, by using variously arranged dots as probes. It was thus assumed that dots can measure activations generated inside abrupt line ends. The results show distribution of activation which differs according to dot distance and angle with respect to the continuation of the line near its end. These data do not agree with the predictions of information processing models in the literature on anomalous figures, which are based on perceptually postulated figures accounting for unlikely gaps. However, they do agree with the dynamic model proposed here, which is based on the idea that certain figure characteristics, eg the differential brightness of anomalous figures, depend on activation distribution which in turn depends on the organization of the forces in play. This idea is rooted in Gestalt theory. Another model supported by our experimental data is Grossberg's neural dynamic approach. In this case too, the basic idea is that of activation distribution which depends on the interaction of complex neural networks functioning according to special algorithms.     

Dreams as modifiers and tests of mental schemas: an emotional selection hypothesis

A process is proposed that helps a person adapt to a social environment. During sleep, this process executes a set of dreams with social content that schemas tentatively incorporate by self-modifying. Due to vast interconnectivity that exists amongst social schemas, such modifications may introduce accidental, maladaptive conflicts. Consequently, a second set of dreams is executed in the form of test scenarios in order to evaluate the schema modifications effected by the first set of dreams. The process would monitor emotions generated during these latter dream tests. If prior, tentative modifications alleviate anxiety, frustration, sadness, or in other ways appear emotionally adaptive, they would be selected for retention. Those modifications that compare negatively to existing, unchanged schemas would be abandoned or further modified and tested. The correspondences of these hypotheses to the sleep cycle, previous dream studies, and functional neurological processes are discussed.     

College students with tattoos and piercings: motives, family experiences, personality factors, and perception by others

The motives, family experiences, and personality characteristics of 341 college students with and without tattoos or piercings were studied. Participants completed Lippa's 1991 measures of the Big Five personality factors, a shortened version of the Body Cathexis Scale, a series of questions about their childhood experiences, and questions about risk-taking behaviors. In addition, reasons to have or not have body modifications and the perceptions of people with body modifications were investigated. Of the 116 men and 186 women, 25% and 33%, respectively, had at least one tattoo or body piercing. There were very few differences in the childhood experiences or personality characteristics of people with or without body modifications. Although people with body modifications did not differ from people without modifications on the Big Five personality measures, people without modifications perceived people with modifications as much different from themselves on these measures. These results indicate that tattoos and piercings in college students are associated with significantly more risk-taking behavior, greater use of alcohol and marijuana, and less social conformity. However, the traditional stereotype that body modifications are indicators of social or personal pathology does not describe contemporary college students.     

Titration in the treatment of the more troubled patient.

This article defines and discusses a modification of technique recommended by the authors in the psychoanalytic treatment of more troubled patients--a modification they call titration. Titration is defined as a conscious decision by the analyst to increase or decrease assistance (or gratification) gradually, in order to facilitate the analytic process. The authors emphasize the complexity of decisions in treatment by focusing on the decision-making processes that titration requires. Guidelines and a case vignette are presented. The authors conclude by considering some of the politics involved in the introduction of technique modifications, the salience of the titration concept, and directions for further exploration.     

Configural face encoding and spatial frequency information

Configural relations and a critical band of spatial frequencies (SFs) in the middle range are particularly important for face recognition. We report the results of four experiments in which the relationship between these two types of information was examined. In Experiments 1, 2A, and 2B, the face inversion effect (FIE) was used to probe configural face encoding. Recognition of upright and inverted faces and nonface objects was measured in four conditions: a no-filter condition and three SF conditions (low, medium, and high frequency). We found significant FIEs of comparable magnitudes for all frequency conditions. In Experiment 3, discrimination of faces on the basis of either configural or featural modifications was measured under the same four conditions. Although the ability to discriminate configural modifications was superior in the medium-frequency condition, so was the ability to discriminate featural modifications. We conclude that the band of SF that is critical for face recognition does not contribute preferentially to configural encoding.     

A Study of the Impact of Informed Consent Procedures on Participant Responses in Trauma-Related Research

Researchers and ethics board members are often concerned about the possibility of adverse reactions to trauma-related research. While research has shown that participants in trauma-related studies rarely experience adverse reactions, mild short-term emotional distress is common. While a number of protections have been suggested to minimize risks for more vulnerable subgroups of participants, no research to date has tested how modifications to informed consent procedures may affect the data collected and participant reactions to the research. One-hundred and forty-five college students were separated into five conditions with different modifications to the informed consent procedures. Participants completed surveys on trauma experience, posttraumatic stress, coping, and reactions to research participation. The results showed no differences among the conditions on all outcome measures. It appears that modifications to informed consent procedures geared toward minimizing risk do not affect the quality of the data collected nor change reactions to participating in trauma-related research.     

Effects of body image on tactile sensitivity to a tickle:: a study of pregnancy

A group of 20 middle-class women between 20 and 40 yr. of age and in the third trimester of pregnancy was compared with a control group of 20 non-pregnant women for cutaneous sensitivity (to a tickle) and for modifications of body schema which were hypothesized to occur during pregnancy. Latency and actual duration were considered in the perception of the tickle. Body schema were studied using two of Fisher's tests, Body Prominence and Body Cathexis. Pregnancy leads to modifications in sensitivity to tickle, specifically with regard to the right half of the body and to some extent in body schema.     

Accidental germ-line modifications through somatic cell gene therapies: some ethical considerations

Proposed somatic cell gene-therapies (especially those involving in utero therapies) may involve a small risk of germ-line modifications; this risk has engendered serious concern, and arguments have been made that such therapies ought not be pursued if such risks exists. We argue here that while pursuing deliberate germ-line modifications in humans would be inappropriate given the current state of the art, the risk of accidental germ-line modifications from most currently proposed in utero gene therapy is no different in kind or degree from other risks regularly taken in medical procedures. Given the possible benefits of such therapies, we argue that the risk of accidental germ-line modifications is well worth taking in these cases.     

Confirmatory factor analysis of the three-factor structure of the schizotypal personality questionnaire and Chapman schizotypy scales

We examined the factor structure of the Schizotypal Personality Questionnaire (SPQ; Raine, 1991), using confirmatory factor analysis in 3 experiments, with an aim to better understand the construct of schizotypy. In Experiment 1 we tested the fit of 2-, 3-, and 4-factor models on SPQ data from a normal sample. The paranoid 4-factor model fit the data best but not adequately. Based on the strong basis for the Raine 3-factor model we attempted to improve the fit of the 3-factor model by making 3 modifications to the Raine model. These modifications produced a well-fitting model. In Experiment 2 the good fit of this modified 2-factor model to SPQ scores was replicated in an independent normal sample. In Experiment 3, the modified 3-factor model was successfully extended to include the 3 Chapman schizotypy scales. Together these 3 experiments indicate that the 3-factor model of the SPQ, albeit with some slight modifications, is a good model for schizotypy structure that is not restricted to 1 measure of schizotypal personality traits.     

List-strength effect: I. Data and discussion

Extra items added to a list cause memory for the other items to decrease (the list-length effect). In one of the present studies we show that strengthening (or weakening) some items on a list harms (helps) free recall of the remaining list items. This is termed the list-strength effect. However, in seven recognition studies the list-strength effect was either absent or negative. This held whether strengthening was accomplished by extra study time or extra repetitions. The seven studies used various means to control rehearsal strategies, thereby providing evidence against the possibility that the findings were due to redistribution of rehearsal or effort from stronger to weaker items within a list. Current models appear unable to predict these results. We suggest that different retrieval operations underlie recall and recognition, as in the SAM model of Gillund and Shiffrin (1984), which can be made to fit the results with certain relatively minor modifications.     

Regression II. Development through regression

As shown in our previous paper (‘Regression I. Experimental approaches to regression’, JAP, 65, 2, 345-65), the common mechanism of regression can be described as reversible dedifferentiation, which is understood as a relative increase of the proportion of low-differentiated (older) systems in actualized experience. Experimental data show that regression following disease (chronic tension headache) is followed by adaptation and an increase in system differentiation in that experience domain which contains systems responsible for that adaptation. The results of mathematical modelling support the idea that reversible dedifferentiation can be one of the mechanisms for increasing the effectiveness of adaptation through learning. Reversible dedifferentiation, which is phenomenologically described as regression, is a general mechanism for restructuring the organism-environment interactions in situations where behaviours that were effective in the past become ineffective. Reversible dedifferentiation has evolved as a component of adaptation when new behaviours are formed and large-scale modifications in the existing behaviours are required in the face of changes in the external and/or internal environment. Thus, the authors believe that this article provides evidence for Jung’s view that regression is not only a ‘return’ to past forms of thinking, affects and behaviour, but that regressive processes provide a significant impetus for psychological growth and development.     

Prevention and health promotion: decades of progress, new challenges, and an emerging agenda.

Daily habits (e.g., smoking, diet, and exercise) and their immediate consequences (e.g., obesity) confer risk for most of the major health problems in industrialized nations. Hence, determinants of these behaviors and their modifications have been central topics in health psychology. Considerable scientific and applied progress has been made, but the field faces important challenges and opportunities in the future. These challenges and opportunities include changes in demographics and patterns of health, the need for a more comprehensive model of the domain of health behavior and prevention, the need to integrate behavioral and psychosocial risk and resilience, the incorporation of new technologies, and addressing a variety of professional and economic barriers to the implementation of prevention in health care.     

Model modifications in covariance structure analysis: the problem of capitalization on chance

In applications of covariance structure modeling in which an initial model does not fit sample data well, it has become common practice to modify that model to improve its fit. Because this process is data driven, it is inherently susceptible to capitalization on chance characteristics of the data, thus raising the question of whether model modifications generalize to other samples or to the population. This issue is discussed in detail and is explored empirically through sampling studies using 2 large sets of data. Results demonstrate that over repeated samples, model modifications may be very inconsistent and cross-validation results may behave erratically. These findings lead to skepticism about generalizability of models resulting from data-driven modifications of an initial model. The use of alternative a priori models is recommended as a preferred strategy.