Visual sensitivity and mindfulness meditation

Practitioners of the mindfulness form of Buddhist meditation were tested for visual sensitivity before and immediately after a 3-mo. retreat during which they practiced mindfulness meditation for 16 hr. each day. A control group composed of the staff at the retreat center was similarly tested. Visual sensitivity was defined in two ways: by a detection threshold based on the duration of simple light flashes and a discrimination threshold based on the interval between successive simple light flashes. All light flashes were presented tachistoscopically and were of fixed luminance. After the retreat, practitioners could detect shorter single-light flashes and required a shorter interval to differentiate between successive flashes correctly. The control group did not change on either measure. Phenomenological reports indicate that mindfulness practice enables practitioners to become aware of some of the usually preattentive processes involved in visual detection. The results support the statements found in Buddhist texts on meditation concerning the changes in perception encountered during the practice of mindfulness.     

The role of entrenchment in children’s and adults’ performance on grammaticality judgment tasks

Between the ages of 3 and 7 years, children have been observed to produce verb argument structure overgeneralization errors (e.g., Don’t giggle me; Bowerman, 1982, 1988; Pinker, 1989). A number of recent studies have begun to find evidence that the precise distributional properties of the input may provide an important part of the explanation for why children retreat from overgeneralization errors (Brooks & Tomasello, 1999; Brooks, Tomasello, Dodson, & Lewis, 1999). The current study evaluates the role of entrenchment (Braine & Brooks, 1995) in constraining argument structure overgeneralization errors using a grammaticality judgment task. The 5-year-olds, 8-year-olds, and adults were presented with examples of argument structure errors containing high and low frequency verbs matched for semantic class and asked to indicate whether, or the extent to which they found the sentences to be grammatical. The data show that across all groups, sentences with argument structure errors containing low frequency verbs were judged to be significantly more grammatical than those containing high frequency verbs. These findings provide further support for the entrenchment hypothesis and suggest that verb frequency plays an important and continuing role in determining a speaker’s choice of verb argument structure.     

Mindfulness training modifies subsystems of attention

Mindfulness is defined as paying attention in the present moment. We investigate the hypothesis that mindfulness training may alter or enhance specific aspects of attention. We examined three functionally and neuroanatomically distinct but overlapping attentional subsystems: alerting, orienting, and conflict monitoring. Functioning of each subsystem was indexed by performance on the Attention Network Test (ANT; Fan, McCandliss, Sommer, Raz, & Posner, 2002). Two types of mindfulness training (MT) programs were examined, and behavioral testing was conducted on participants before (Time 1) and after (Time 2) training. One training group consisted of individuals naive to mindfulness techniques who participated in an 8-week mindfulness-based stress reduction (MBSR) course that emphasized the development of concentrative meditation skills. The other training group consisted of individuals experienced in concentrative meditation techniques who participated in a 1-month intensive mindfulness retreat. Performance of these groups was compared with that of control participants who were meditation naive and received no MT. At Time 1, the participants in the retreat group demonstrated improved conflict monitoring performance relative to those in the MBSR and control groups. At Time 2, the participants in the MBSR course demonstrated significantly improved orienting in comparison with the control and retreat participants. In contrast, the participants in the retreat group demonstrated altered performance on the alerting component, with improvements in exogenous stimulus detection in comparison with the control and MBSR participants. The groups did not differ in conflict monitoring performance at Time 2. These results suggest that mindfulness training may improve attention-related behavioral responses by enhancing functioning of specific subcomponents of attention. Whereas participation in the MBSR course improved the ability to endogenously orient attention, retreat participation appeared to allow for the development and emergence of receptive attentional skills, which improved exogenous alerting-related process.     

Results of an Intervention for Individuals and Families with <Emphasis Type="Italic">BRCA</Emphasis> Mutations: A Model for Providing Medical Updates and Psychosocial Support Following Genetic Testing

Providing medical management updates and long-term support to families with hereditary cancer syndromes in rural areas is a challenge. To address this, we designed a one-day retreat for BRCA1/2 carriers in our region. The retreat included educational updates about medical management, genetic privacy and discrimination, and addressed psychological and family issues. Evaluations completed at the conclusion of the retreat were overwhelmingly positive with requests for a similar event in the future. The impact of this retreat on a variety of health behaviors was assessed. Eligible participants completed questionnaires before and 6 months after the retreat. Questionnaires focused on lifestyle, cancer screening and prevention practices, psychological history and distress, decision-making regarding genetic testing, and family communication issues. For individuals who completed both the pre and post retreat questionnaires, one-half made lifestyle changes and nearly two-thirds increased cancer screening, initiated chemoprevention, completed or planned to complete preventative surgery in the future. We conclude that this type of forum provides a valuable opportunity for BRCA carriers and their families to receive updated medical information, share personal experiences, provide and receive support, as well as change health behaviors.     

Symbolically speaking: a connectionist model of sentence production

The ability to combine words into novel sentences has been used to argue that humans have symbolic language production abilities. Critiques of connectionist models of language often center on the inability of these models to generalize symbolically (Fodor & Pylyshyn, 1988; Marcus, 1998). To address these issues, a connectionist model of sentence production was developed. The model had variables (role‐concept bindings) that were inspired by spatial representations (Landau & Jackendoff, 1993). In order to take advantage of these variables, a novel dual‐pathway architecture with event semantics is proposed and shown to be better at symbolic generalization than several variants. This architecture has one pathway for mapping message content to words and a separate pathway that enforces sequencing constraints. Analysis of the model's hidden units demonstrated that the model learned different types of information in each pathway, and that the model's compositional behavior arose from the combination of these two pathways. The model's ability to balance symbolic and statistical behavior in syntax acquisition and to model aphasic double dissociations provided independent support for the dual‐pathway architecture.     

In Retreat

I use Thich Nhat Hanh's books in ethics courses at Montana State University to stretch the minds of my generally conservative, traditional students. When I saw that Thich Nhat Hanh was offering a retreat in Colorado, I attended. The five-day retreat allowed me to witness Thich Nhat Hanh and his community of nuns and monks in action. It also provided me with ample time to ponder the phenomenon of human belief and practice. I learned much to share with students, such as the art of eating silent meals and the practice of hugging meditation. But I also learned a great deal from the imperfections and shortcomings that I encountered at this mindfulness retreat.     

On the Derivation of Instructional Applications From Cognitive Theories: Commentary on Chandler and Sweller

In "Cognitive Load Theory and the Format of Instruction," Chandler and Sweller (1991) report a series of experiments that focus on presentation formats that optimize learning from diagrams accompanied by ancillary text. This series of studies continues a line of work in which Sweller and his colleagues (Cooper & Sweller, 1987; Sweller, 1988; Sweller & Cooper, 1985; Tarmizi & Sweller, 1988; Ward & Sweller, 1990) have shown that students who study worked examples perform better than students who actually work the problems. Sweller (1988) proposed cognitive load theory as an explanation of these results, indicating that the critical feature of worked examples is that they appropriately direct attention and impose a relatively light cognitive load. Similarly, other presentation formats that accomplish these goals should also facilitate learning.     

Constructs and developmental assessment centers: Further troubling empirical findings

Research indicates that assessment center (AC) ratings typically demonstrate poor construct validity; that is, they do not measure the intended dimensions of managerial performance (e.g., Sackett & Harris, 1988). The purpose of this study was to investigate the construct validity of dimension ratings from a developmental assessment center (N=102), using multitrait-multimethod analysis and factor analysis. The relationships between AC ratings, job performance ratings, and personality measures also were investigated. Results indicate that the AC ratings failed to demonstrate construct validity. The ratings did not show the expected relationships with the job performance and personality measures. Additionally, the factors underlying these ratings were found to be the AC exercises, rather than the managerial dimensions as expected. Potentially, this lack of construct validity of the dimension ratings is a serious problem for a developmental assessment center. There is little evidence that the managerial weaknesses identified by the AC are the dimensions that actually need to be improved on the job. Methods are discussed for improving the construct validity of AC ratings, for example, by decreasing the cognitive demands on the assessors.This study is based on a dissertation submitted to North Carolina State University. Portions of this paper were presented at the meeting of the Society for Industrial and Organizational Psychology in Montreal, Quebec, May, 1992. I am grateful to Paul Thayer, Bert Westbrook, James W. Cunningham, and Patrick Hauenstein for their contributions to this research. I also thank several anonymous reviewers for their comments on this article.     

What's left is closer to right : A response to keating

The present paper attempts to respond to criticisms made by Keating (1988, Developmental Review, 8, 376–384) regarding the present author's earlier paper which described a recasted model of formal operations ( Byrnes, 1988, Developmental Review, 8, 66–87). This earlier paper made a distinction between conceptual and procedural knowledge at the level of formal operations, and presented evidence supporting this recasted model. Keating (1988) argues that the recasted model fails to capture what Piaget originally intended, that it fails to incorporate a procedural knowledge component, and that there is some question as to what would constitute empirical support for the model. The present paper discusses each of these criticisms and others in turn, and clarifies earlier arguments.     

Violence against women: Mental health effects. Part II. Conceptualizations of posttraumatic stress

A broad range of psychological aftereffects have been noted among women who have experienced male-perpetrated violence. These symptoms vary considerably among individuals, across social contexts, and across different types of violent encounters (Coley & Beckett, 1988; Goodman, Koss, & Russo, 1992; Koss, 1988; Straus, Gelles, & Steinmetz, 1980). Nevertheless, a remarkably consistent picture of the psychological sequelae of violence—particularly sexual and physical assault—emerges from the empirical and clinical literature (Koss, 1988). In this article, we use the posttraumatic stress disorder diagnosis—a frame that captures many of the disparate symptoms described by researchers—as a basis for exploring several conceptual models that have been developed to explain women's responses to violence.     

What’s Really at Issue with Novel Predictions?

In this paper I distinguish two kinds of predictivism, ‘timeless’ and ‘historicized’. The former is the conventional understanding of predictivism. However, I argue that its defense in the works of John Worrall (Scerri and Worrall 2001, Studies in History and Philosophy of Science 32, 407–452; Worrall 2002, In the Scope of Logic, Methodology and Philosophy of Science, 1, 191–209) and Patrick Maher (Maher 1988, PSA 1988, 1, pp. 273) is wanting. Alternatively, I promote an historicized predictivism, and briefly defend such a predictivism at the end of the paper.     

Loving-kindness meditation: a field study

Surveys were conducted at two metta meditation retreats in order to examine the psychological effects of metta meditation. Participants were invited to complete the survey at the beginning of the retreat, at the end of the retreat, and two weeks after the end of the retreat. Participants completed the same scales at each time phase, which included measures of happiness, compassionate love, revenge and avoidance motivation, gratitude, and a depression, anxiety and stress scale. Significant increases were found in happiness and compassionate love, reductions in avoidance and revenge, and reductions on the depression, anxiety and stress subscales.     

Delayed-onset sensitization emerges after dishabituation in developing Aplysia.

A recent study of the development of nonassociative learning in the siphon withdrawal reflex of Aplysia showed that dishabituation (facilitation of an habituated response) and sensitization (facilitation of a nonhabituated response) emerge according to different developmental timetables: dishabituation precedes sensitization by approximately 60 days (Rankin & Carew, 1988). Both forms of facilitation of the reflex were observed within 90 s of an electrical shock to the tail. However, more recent work by Marcus and colleagues (1988) in adult animals revealed that sensitization can have a delayed onset of 20-30 min after a strong tail shock. Since the developmental study of Rankin and Carew (1988) only tested the reflex for 10 min after tail shock, it is possible that sensitization was in fact present at earlier developmental stages, but was undetected. To examine this question, in the present study we utilized a longer (40-50 min) post-shock observation period to determine whether delayed-onset sensitization is exhibited in juvenile Aplysia, and if so, when it is expressed during development. In our first experiment, we found that Early Stage 12 juveniles (80-95 days after metamorphosis) showed significant delayed-onset sensitization 30-50 min after a strong tail shock. In a second experiment, we found that delayed-onset sensitization was absent in Stage 11 animals (20-70 days after metamorphosis). Thus delayed-onset sensitization emerges in Early Stage 12. The fact that the birthdate of delayed-onset sensitization is at least 30 days after that of dishabituation (Rankin & Carew, 1987, 1988) supports the hypothesis that these two forms of nonassociative learning may have at least partly different underlying mechanisms.     

More evidence for the universality of a contempt expression

Since its publication in 1986, Ekman and Friesen's (1986) discovery of a universal facial expression unique to contempt has received considerable attention (e.g., see Ekman & Friesen, 1988; Ekman & Heider, 1988; Ekman, O'Sullivan, & Matsumoto, 1991a, 1991b; Izard & Haynes, 1988; Russell, 1991a, 1991b; Ricci Bitti, Brighetti, Garotti, Boggi-Cavallo, 1989). Actually, much of this argument began before there was adequate sampling of contempt photographs across many cultures. In order to address this concern, this study reports judgment data on all 12 photos used in previous studies depicting the contempt expression from four non-American cultures. The data provide a strong replication of Ekman and Friesen's (1986) and Ekman and Heider's (1988) findings for a universal expression of contempt.The research reported in this article was supported in part by a grant from the National Institute of Mental Health (MH 42749-01), and by a Faculty Award for Creativity, Scholarship, and Research from San Francisco State University. I would like to thank Veronica Ton for her aid in the collection of the Vietnamese data; Valerie Hearn for her aid in the collection of the Polish and Hungarian data; Masami Kobayashi, Fazilet Kasri, Deborah Krupp, Bill Roberts, and Michelle Weissman for their aid in my research program on emotion; and William Irwin for his aid in the data analysis.     

Environmental context-dependent homophone spelling

Two experiments provided evidence of environmental context-dependent memory using a homophone spelling test (e.g., Jacoby & Witherspoon, 1982), an implicit, indirect measure of memory (Richardson-Klavehn & Bjork, 1988). Context reinstatement significantly increased priming in both experiments. The finding of environmental context reinstatement effects with this implicit memory test and others (Garberg & Radtke, 1986; Graf, 1988) indicates that the effect can be found reliably using a test that does not encourage subjects to generate their own context cues from memory.     

Herbert Feigl (1902–1988)

Autorisierte Übersetzung der Gedenkrede, die C. Wade Savage auf dem 1988 Biennial Meeting der Philosophy of Science Association in Evanston, Illinois gehalten hat (vgl. Arthur Fine & Jarrett Laplin (eds.), PSA 1988 Proceedings, vol. 2, East Lansing, Michigan 1989, pp. 15–22). — Die Herausgeber danken Herrn Dirk Koppelberg für die Übertragung ins Deutsche.     

Investigating the impact of mindfulness meditation training on working memory: A mathematical modeling approach

We investigated whether mindfulness training (MT) influences information processing in a working memory task with complex visual stimuli. Participants were tested before (T1) and after (T2) participation in an intensive one-month MT retreat, and their performance was compared with that of an age- and education-matched control group. Accuracy did not differ across groups at either time point. Response times were faster and significantly less variable in the MT versus the control group at T2. Since these results could be due to changes in mnemonic processes, speed–accuracy trade-off, or nondecisional factors (e.g., motor execution), we used a mathematical modeling approach to disentangle these factors. The EZ-diffusion model (Wagenmakers, van der Maas, & Grasman, Psychonomic Bulletin & Review 14:(1), 3–22, 2007) suggested that MT leads to improved information quality and reduced response conservativeness, with no changes in nondecisional factors. The noisy exemplar model further suggested that the increase in information quality reflected a decrease in encoding noise and not an increase in forgetting. Thus, mathematical modeling may help clarify the mechanisms by which MT produces salutary effects on performance.