The Logic of Opacity

We explore the view that Frege's puzzle is a source of straightforward counterexamples to Leibniz's law. Taking this seriously requires us to revise the classical logic of quantifiers and identity; we work out the options, in the context of higher‐order logic. The logics we arrive at provide the resources for a straightforward semantics of attitude reports that is consistent with the Millian thesis that the meaning of a name is just the thing it stands for. We provide models to show that some of these logics are non‐degenerate.     

When time is money: The effect of hourly payment on the evaluation of time

Empirical research shows decisions about time are often made differently than decisions about money, belying the oft-quoted maxim that “time is money”. However, there are organizational practices such as payment on the basis of time that can make the equivalence of time and money salient and are associated with an economic evaluation of time. Study 1 showed that people paid by the hour applied mental accounting rules to time that are typically only applied to money. Using data from a nationally representative survey, Study 2 documented that people paid by the hour weighed economic returns more strongly in making tradeoffs between time and money. Study 3 showed that participants’ prior exposure to hourly payment was associated with a greater willingness to trade more time for money and that participants randomly assigned to calculate their hourly wage rate expressed greater willingness to trade more time for money. The interaction of prior experience with whether or not participants calculated an hourly wage in predicting participants’ willingness to trade more time for money was fully mediated by the salience of economic criteria in participants’ decision-making.     

Effects of the Dads for Life intervention on interparental conflict and coparenting in the two years after divorce

The ability of parents to forge harmonious coparenting relationships following divorce is an important predictor of their children's long-term well-being. However, there is no convincing evidence that this relationship can be modified through intervention. A preventive intervention that we developed, Dads for Life (DFL), which targeted noncustodial parents as participants, has previously been shown in a randomized field trial to favorably impact child well-being. We explore here whether it also has an impact on mothers' and fathers' perceptions of coparenting and interparental conflict in the 2 years following divorce. Results of the latent growth curve models we evaluated showed that both mothers and fathers reported less conflict when the father participated in DFL as compared with controls. For the fathers, perceptions of coparenting did not change over time in either the DFL or control conditions. Alternatively, mothers' perceptions of support declined over time in the control group, whereas those whose ex-husbands participated in the DFL program reported significant positive growth change toward healthier coparenting. The positive findings for mothers' reports are particularly compelling because mothers were not the participants, and thus common alternative explanations are ruled out. The DFL intervention, then, offers courts a promising program to improve families' functioning after divorce.     

The Couples Emotion Rating Form: psychometric properties and theoretical associations

The Couples Emotion Rating Form assesses 3 types of negative emotion that are salient during times of relationship conflict. Hard emotion includes feeling angry and aggravated, soft emotion includes feeling hurt and sad, and flat emotion includes feeling bored and indifferent. In Study 1, scales measuring hard and soft emotion were validated by observation of 82 married couples in a series of conflict conversations. Self-report ratings for each emotion corresponded with observer ratings of the same emotion, and the emotion scales produced expected correlations with negative affect. In Study 2, a measure of flat emotion was added to the instrument, and 1,239 married people completed questionnaires. The rating form fit an expected 3-dimensional factor structure, and each scale correlated with a set of theoretically linked constructs. Hard emotion was associated with power assertion, pursuit of self-centered goals, and negative communication. Soft emotion was associated with expressions of vulnerability, pursuit of prosocial goals, and positive communication. Flat emotion was distinct from other emotions in being associated with withdrawal.     

Direct and Indirect Pathways between Parental Constructive Behavior and Adolescent Affiliation with Achievement-Oriented Peers

We investigated the direct and indirect pathways through which parental constructive behavior may influence the adolescent’s affiliation with achievement-oriented peers. Using a longitudinal survey data set from nine California and Wisconsin high schools (from 9th through 12th grades, with an approximate age range from 14 through 18) structural equation models were estimated. Our longitudinal analyses confirmed an indirect effect from Time 1 parental constructive behavior and a direct effect from Time 2 parental constructive behavior on an increase in the perceived achievement orientation of friends at Time 2, net of the stability effect from the prior values of the perceived achievement orientation of friends at Time 1. A point to be emphasized is that parental influence on peer affiliation in late adolescence remains significant even as parental involvement in adolescents’ lives diminishes. In addition, the direct effect from Time 2 parental constructive behavior on the perceived achievement-orientation of friends appears stronger for boys than for girls.     

The Effects of Cognitive: Linguistic Variables and Language Experience on Behavioural and Kinematic Performances in Nonword Learning

The aim of the present study was to investigate the effects of cognitive-linguistic variables and language experience on behavioral and kinematic measures of nonword learning in young adults. Group 1 consisted of thirteen participants who spoke American English as the first and only language. Group 2 consisted of seven participants with varying levels of proficiency in a second language. Logistic regression of the percent of correct productions revealed short-term memory to be a significant contributor. The bilingual group showed better performance compared to the monolinguals. Linear regression of the kinematic data revealed that the short-term memory variable contributed significantly to movement coordination. Differences were not observed between the bilingual and the monolingual speakers in kinematic performance. Nonword properties including syllable length and complexity influenced both behavioral and kinematic performance. The findings supported the observation that nonword repetition is multiply determined in adults.     

Psychological Determinants of Optimism Regarding Consequences of the War

Gazing behavior of 10 three-month-old twin infants (five male and five female) and their mothers during play, bottle feeding, and spoon feeding activities were analyzed. Video-tape equipment was used in the home; data were gathered as naturalistically as possible. Mothers looked at infants for a greater percentage of the total time and for longer durations than infants looked at mothers. A consistency-activation personality theory in which mothers are highly motivated to gaze at infants, but infants seek visual interest by looking away from mother, is suggested to interpret the findings. Both looking and not-looking gazes and mean and median measures of central tendency were shown to be helpful and necessary for the gazing analysis.     

In search of the psychopathic sexuality taxon: indicator size does matter

Recent research has suggested that a qualitatively distinct subtype of psychopathic sex offender can be identified via taxometric analyses (Harris et al., 2007). In this study we attempted to replicate the hypothesized psychopathic sexuality taxon in a group of 503 male sexual offenders using data from the Psychopathy Checklist-Revised (PCL-R:Hare, 2003) and five coercive and precocious sexuality items. Ambiguous to dimensional results were obtained when, in a replication of the Harris et al. (2007) study,dichotomized indicators were analyzed with summed input maximum covariance (MAXCOV). Clearly dimensional results, however, were obtained when higher correlating and more valid quasi-continuous indicators were analyzed with traditional (input variables not summed) MAXCOV, and both dichotomous and quasi-continuous indicators were analyzed with mean above minus below a cut (MAMBAC) and latent-mode factor analysis (L-Mode). These results suggest that Harris et al. (2007) may have mistaken the random fluctuations of weakly correlating and poorly differentiating indicators for a taxon. Consistent with the vast majority of earlier research,our results suggest that psychopathy (with or without coercive and precocious sexuality) is a dimensional construct.     

Time,money, and happiness: How does putting a price on time affect our ability to smell the roses?

In this paper, we investigate how the impatience that results from placing a price on time impairs individuals' ability to derive happiness from pleasurable experiences. Experiment 1 demonstrated that thinking about one's income as an hourly wage reduced the happiness that participants derived from leisure time on the internet. Experiment 2 revealed that a similar manipulation decreased participants' state of happiness after listening to a pleasant song and that this effect was fully mediated by the degree of impatience experienced during the music. Finally, Experiment 3 showed that the deleterious effect on happiness caused by impatience was attenuated by offering participants monetary compensation in exchange for time spent listening to music, suggesting that a sensation of unprofitably wasted time underlay the induced impatience. Together these experiments establish that thinking about time in terms of money can influence how people experience pleasurable events by instigating greater impatience during unpaid time.     

The communication of emotion during conflict in married couples

This study investigated emotion during interpersonal conflicts between mates. It addressed questions about how clearly couples express emotion (encoding), how accurately they recognize each other's emotion (decoding), and how well they distinguish between types of negative emotion. It was theorized that couples express and perceive both: (a) event-specific emotions, which are unique to particular people on particular occasions, and (b) contextual-couple emotions, which reflect the additive effect of emotions across different events and across both partners. Eighty-three married couples engaged in a series of two conflict conversations. Self-report ratings, observer ratings, and partner ratings were used to assess two types of negative emotion: hard emotion (e.g., angry or annoyed) and soft emotion (e.g., sad or hurt). Couples were reasonably accurate in encoding, decoding, and in distinguishing between types of emotion. Emotion expression was strongly associated with general levels of contextual-couple emotion summed across two conversations, whereas emotion perception was more closely tied to specific events. Hard emotion was readily perceived when it was overtly expressed, and soft emotion could sometimes be recognized even when it was not expressed clearly.