The monolingual nature of speech segmentation by bilinguals.

Monolingual French speakers employ a syllable-based procedure in speech segmentation; monolingual English speakers use a stress-based segmentation procedure and do not use the syllable-based procedure. In the present study French-English bilinguals participated in segmentation experiments with English and French materials. Their results as a group did not simply mimic the performance of English monolinguals with English language materials and of French monolinguals with French language materials. Instead, the bilinguals formed two groups, defined by forced choice of a dominant language. Only the French-dominant groups showed syllabic segmentation and only with French language materials. The English-dominant group showed no syllabic segmentation in either language. However, the English-dominant group showed stress-based segmentation with English language materials; the French-dominant group did not. We argue that rhythmically based segmentation procedures are mutually exclusive, as a consequence of which speech segmentation by bilinguals is, in one respect at least, functionally monolingual.     

Accounting for sex differences in depression through female victimization: Childhood sexual abuse

Unipolar depression is nearly twice as prevalent is women as men (Nolen-Hoeksema, 1987). Several theories attempting to account for this disparity have been proposed, but none has yet systematically considered women's victimization experiences as a possible significant contributor to their high risk for later depression. One type of victimization that is much more common in females than males is child sexual abuse. Recent research indicates that the long-term effects of child sexual abuse include anxiety, depression, and low self-esteem. In this paper, we review research suggesting that child sexual abuse can account for a significant portion of the differences in the rates of depression between females and males.     

The use of antiepileptic drugs in bipolar disorders: a review based on evidence from controlled trials

Antiepileptic drugs (AEDs) have diverse psychotropic profiles. Some AEDs have proven to be efficacious in the treatment of mood disorders, especially bipolar disorder. Others are ineffective as primary treatments but may be useful adjuncts for mood disorders or comorbid conditions. Valproate (acute mania and mixed episodes), carbamazepine (acute mania and mixed episodes), and lamotrigine (maintenance to delay recurrence) have United States Food and Drug Administration indications for the treatment of bipolar disorder. This article provides an overview of data on the use of AEDs in bipolar disorder, including acute mania and depression, prophylaxis, and rapid cycling.     

Lexical retrieval constrained by sound structure: the role of the left inferior frontal gyrus

Positron emission tomography was used to investigate two competing hypotheses about the role of the left inferior frontal gyrus (IFG) in word generation. One proposes a domain-specific organization, with neural activation dependent on the type of information being processed, i.e., surface sound structure or semantic. The other proposes a process-specific organization, with activation dependent on processing demands, such as the amount of selection needed to decide between competing lexical alternatives. In a novel word retrieval task, word reconstruction (WR), subjects generated real words from heard non-words by the substitution of either a vowel or consonant. Both types of lexical retrieval, informed by sound structure alone, produced activation within anterior and posterior left IFG regions. Within these regions there was greater activity for consonant WR, which is more difficult and imposes greater processing demands. These results support a process-specific organization of the anterior left IFG.     

Effects of phoneme repertoire

In three experiments, listeners detected vowel or consonant targets in lists of CV syllables constructed from five vowels and five consonants. Responses were faster in a predictable context (e.g., listening for a vowel target in a list of syllables all beginning with the same consonant) than in an unpredictable context (e.g., listening for a vowel target in a list of syllables beginning with different consonants). In Experiment 1, the listeners’ native language was Dutch, in which vowel and consonant repertoires are similar in size. The difference between predictable and unpredictable contexts was comparable for vowel and consonant targets. In Experiments 2 and 3, the listeners’ native language was Spanish, which has four times as many consonants as vowels; here effects of an unpredictable consonant context on vowel detection were significantly greater than effects of an unpredictable vowel context on consonant detection. This finding suggests that listeners’ processing of phonemes takes into account the constitution of their language’s phonemic repertoire and the implications that this has for contextual variability.     

Phonological cues to open- and closed-class words in the processing of spoken sentences

Evidence is presented that (a) the open and the closed word classes in English have different phonological characteristics, (b) the phonological dimension on which they differ is one to which listeners are highly sensitive, and (c) spoken open- and closed-class words produce different patterns of results in some auditory recognition tasks. What implications might link these findings? Two recent lines of evidence from disparate paradigms—the learning of an artificial language, and natural and experimentally induced misperception of juncture—are summarized, both of which suggest that listeners are sensitive to the phonological reflections of open- vs. closed-class word status. Although these correlates cannot be strictly necessary for efficient processing, if they are present listeners exploit them in making word class assignments. That such a use of phonological information is of value to listeners could be indirect evidence that open- vs. closed-class words undergo different processing operations.     

Self-monitoring and the association between confidence and accuracy

A personality prediction task in which a confidence rating accompanies each judgment is used to test the hypotheses that self-monitoring is positively related to accuracy, positively related to confidence, negatively related to calibration, and capable of acting as a moderator of the relationship between accuracy and confidence. Data from 101 university students support two of these predictions: High self-monitors exhibit more confidence and poorer calibration than low self-monitors. Concern for appropriateness is found to be unrelated to all other variables studied. Results are discussed in the context of socioanalytic theory and recent theories of self-presentation, affectivity, and the relationship between illusions and well-being.     

Concern for appropriateness as a moderator variable in the statistical explanation of self-reported use of alcohol and marijuana

Two studies examine the Concern for Appropriateness Scale (Lennox & Wolfe, 1984) as a likely moderator of dispositional and environmental variables associated with self-reported use of alcohol and marijuana by college and precollege students. In Study 1, data from 408 upper division students show that concern score interacts significantly with religiosity in analyses of use of both drugs, but not with any of 11 other dispositional variables nor with drug-specific environment predictors in analyses of use of either drug. In Study 2, data from 242 recent high school graduates show that concern score interacts significantly with religiosity and drug-specific environment in the explanation of alcohol use but not in the explanation of marijuana use. All of the significant interactions are in the predicted direction. Results therefore suggest that the concern scale is valid for some of its intended purposes.