Beyond mind-reading: multi-voxel pattern analysis of fMRI data

A key challenge for cognitive neuroscience is determining how mental representations map onto patterns of neural activity. Recently, researchers have started to address this question by applying sophisticated pattern-classification algorithms to distributed (multi-voxel) patterns of functional MRI data, with the goal of decoding the information that is represented in the subject's brain at a particular point in time. This multi-voxel pattern analysis (MVPA) approach has led to several impressive feats of mind reading. More importantly, MVPA methods constitute a useful new tool for advancing our understanding of neural information processing. We review how researchers are using MVPA methods to characterize neural coding and information processing in domains ranging from visual perception to memory search.     

The Obsessive-Compulsive Inventory: development and validation of a short version

This article reports on the development of a revised version of the Obsessive-Compulsive Inventory (OCI; E. B. Foa, M. J. Kozak, P. Salkovskis, M. E. Coles, & N. Amir, 1998), a psychometrically sound, theoretically driven, self-report measure. The revised OCI (OCI-R) improves on the parent version in 3 ways: It eliminates the redundant frequency scale, simplifies the scoring of the subscales, and reduces overlap across subscales. The reliability and validity of the OCI-R were examined in 215 patients with obsessive-compulsive disorder (OCD), 243 patients with other anxiety disorders, and 677 nonanxious individuals. The OCI-R, which contains 18 items and 6 subscales, has retained excellent psychometric properties. The OCI-R and its subscales differentiated well between individuals with and without OCD. Receiver operating characteristic (ROC) analyses demonstrated the usefulness of the OCI-R as a diagnostic tool for screening patients with OCD, utilizing empirically derived cutscores.     

Semantic and phonological influences on the processing of words and pseudohomophones

In two experiments, we investigated the relationship between semantics and phonology in the lexical decision task. In the first experiment, lexical decisions to words with large semantic neighborhoods were faster than those to words with sparse semantic neighborhoods. Conversely, this effect of semantic neighborhood was reversed for pseudohomophones (e.g., nale). That is, pseudohomophones based on words with large semantic neighborhoods took longer to reject than did those based on words with sparse semantic neighborhoods. In the second experiment, we found the magnitude of the semantic neighborhood effect for words to be a function of nonword foil type. Taken together, these results indicate that semantic neighborhood size affects processing of both words and pseudohomophones, and that the effect of semantic neighborhood size for words is more pronounced when pseudohomophone foils are employed. These effects are discussed in terms of a model in which the orthographic, phonological, and semantic systems are fully interactive.     

Merleau-Pontian Phenomenology as Non-Conventionally Utopian

This essay takes up the claim made recently by Simon Critchley in The Companion to Continental Philosophy that a feature common to many philosophers in the Continental tradition is the utopian demand that things be otherwise. The general question I pursue has to do with whether or not such a claim includes movements within Continental philosophy that do not self-identify with the utopian (like critical theory). The particular question has to do with whether or not the movement of phenomenology is utopian or does it, because of its other commitments, view the utopian as the antithesis to its orientation, which makes that claim that phenomenology is utopian seem strange. My thesis is that phenomenology can be seen as a utopian tradition but that some account must be given that demonstrates this connection to the utopian. In particular, I argue that Maurice Merleau-Ponty's phenomenology provides an understanding of the utopian, which I call a non-conventional view, that is vastly different from the one assumed by most when they see or hear the word utopian, which I label conventional. I show that such a non-conventional understanding can be developed in a way that neither requires us to view the utopian solely as opposed to finitude and contingency, nor a form of thought and action from which we necessarily need to dissociate ourselves. It is this non-conventional view of the utopian that in the end enables us to understand how Continental philosophy in general and phenomenology in particular are important bearers of the utopian demand that things be otherwise.     

Unity and Diversity in American Political Culture: An Exploratory Study of the National Conversation on American Pluralism and Identity

Drawing on participant observation and quantitative analysis, this paper investigates the National Conversation on American Pluralism and Identity, a series of local conversation projects organized by the National Endowment for the Humanities in 1995 and 1996. After linking this program to debates about American political culture, the paper analyzes the observational and survey data in light of five hypotheses about the conversations. The conversations reveal fundamental, unresolved dilemmas regarding the compatibility between American identity and ethnic pluralism, although the participants sometimes cope with these dilemmas in culturally creative ways.     

Patterns of maternal and infant imitation during play

In contrast to recent experimental studies that have sought to establish the infant's ability to imitate, the goal of the current study was to establish the actual performance of imitation by infants and their mothers during episodes of face-to-face play. Three-min play episodes of 20 mothers and their 13- to 16-week-old infants were videotaped. Instances of mouth openings, lip movements, tongue protrusions, smiling, and vocalizations by both partners were coded. Sequential analyses revealed stochastic patterns of imitation by both interactants. Mothers contingently imitated initiations by their infants and were more likely to make like initiations during action in the same category by their infants. Infants did not show onset-to-onset imitation but did show an increased likelihood to initiate actions when their mothers were engaged in a like action. That imitation by the mother is a pervasive characteristic of such interactions is consistent with earlier suggestions of its role in the acquisition of social and emotional skills. The results suggest that infants also display patterns of matching in early social interactions.     

Levels of representation in the interpretation of anaphoric reference and instrument inference

The level of representation accessed when inferences are made during sentence comprehension was examined. The inferences investigated included antecedent assignment for both definite noun phrase anaphors and pronouns and also instrument inferences. In making these inferences, a listener must access the inferred element, whether an antecedent or an instrument, in either a linguistic form representation or a discourse model. The level of representation involved in these inferences was determined by exploiting differences in the lexical-decision and naming tasks, which were argued to exhibit differential sensitivity to representational levels. In three experiments, the priming of antecedent and instrument targets in the lexical decision task was compared with priming of the same targets in the naming task. Differences in the patterns of activation across the two tasks indicated that all three types of inferences required-accessing-elements in a discourse model. Three control experiments ruled out simple context or congruity checking as an explanation for our results. The following conclusions were also supported by these studies: (1) Antecedent assignment occurs immediately after processing an anaphor; (2) antecedent assignment involves inhibition for the inappropriate antecedent rather than facilitation for the appropriate antecedent; (3) although subjects do not make instrument inferences-when they hear isolated sentences containing verbs that strongly imply certain instruments, the inferences are made when sentences are preceded by a context that mentions the instrument.     

‘Brain-Malfunction’ Cases and the Dispositionalist Reply to Frankfurt's Attack on PAP

Harry Frankfurt has famously argued against the principle of alternate possibilities (PAP) by presenting a case in which, apparently, a person is morally responsible for what he has done even though he could not have done otherwise. A number of commentators have proposed dispositionalist responses to Frankfurt, arguing that he has not produced a counterexample to PAP because, contrary to appearances, the ability to do otherwise is indeed present but is a disposition that has been ‘masked’ or ‘finked’ by the presence of a counterfactual controller. This article argues that this response to Frankfurt does not undercut his attack on PAP, since there are Frankfurt-style counterexamples to the principle—‘brain-malfunction’ cases—that evade the dispositionalist analysis.     

Construct Validity of the Relationship Profile Test: Links With Measures of Psychopathology and Adult Attachment

This study assessed the construct validity of the Relationship Profile Test (RPT; Bornstein &; Languirand, 2003 Bornstein, R. F., &; Languirand, M. A. (2003). Healthy dependency. New York, NY: Newmarket. [Google Scholar]) with a substance abuse sample. One hundred-eight substance abuse patients completed the RPT, Experiences in Close Relationships Scale–Short Form (Wei, Russell, Mallinckrodt, &; Vogel, 2007 Wei, M., Russell, D. W., Mallinckrodt, B., &; Vogel, D. L. (2007). The Experience in Close Relationships Scale (ECR)–Short Form: Reliability, validity and factor structure. Journal of Personality Assessment, 88, 187–204.[Taylor &; Francis Online], [Web of Science ®] , [Google Scholar]), Personality Assessment Inventory (Morey, 1991 Morey, L. C. (1991). Personality Assessment Inventory professional manual. Odessa, FL: Psychological Assessment Resources. [Google Scholar]), and Symptom Checklist–90–Revised (Derogatis, 1983 Derogatis, L. R. (1983). SCL–90–R administration, scoring, and procedures manual II. Towson, MD: Clinical Psychometric Research. [Google Scholar]). Results suggest that the RPT has good construct validity when compared against theoretically related broadband measures of personality, psychopathology, and adult attachment. Overall, health dependency was negatively related to measures of psychopathology and insecure attachment, and overdependence was positively related to measures of psychopathology and attachment anxiety. Many of the predictions regarding RPT detachment and the criterion measures were not supported. Implications of these findings are discussed.