Predicting ADHD Symptoms in Adolescence from Early Childhood Temperament Traits

Extreme levels of certain temperament traits can be early markers of different developmental pathways of attention-deficit/hyperactivity disorder (ADHD). However, the long-term utility of using these traits as predictors of ADHD is not fully known. This study includes 64 male adolescents (M age = 13.5), who have been followed since birth as part of a longitudinal study. The primary aim was to test effortful control (EC), activity level, and anger, measured in early childhood – both with mother’s reports and laboratory assessments –as predictors of ADHD symptoms in adolescence. Further, we investigated the specificity of this prediction to the different ADHD symptom domains. The results demonstrated that early temperament dimensions of EC and activity level were predictive of ADHD symptoms about 10 years later, when the participants reached adolescence. Moreover, activity level showed specificity only to hyperactivity-impulsivity symptoms whereas EC was a predictor of the two symptom domains. Anger had a predictive correlation with ADHD symptoms; however, it did not have a unique predictive contribution. These results emphasize the relevance of EC and activity level in the developmental course of ADHD. Identification of early risk factors can lead to more efficient design and implementation of intervention programs.     

The Power of Powerlessness

Philosophers should forget what they think they know about divine assistance, power, control, up‐to‐usness, freedom‐from and free will, when it comes to alcoholism, given what Alcoholics Anonymous (AA) says. Alcoholics will never be free of their alcoholism; although it is up to them to acknowledge their powerlessness over alcohol, often that is not possible until they hit bottom, and even then they might not acquire the power of powerlessness without help from a Higher Power. After explaining and defending these insights of AA, the unwarranted assumptions behind how philosophers (and others) criticise them are identified.     

At the threshold of knowledge

We explore consequences of the view that to know a proposition your rational credence in the proposition must exceed a certain threshold. In other words, to know something you must have evidence that makes rational a high credence in it. We relate such a threshold view to Dorr et al.’s (Philosophical Studies 170(2):277–287, 2014) argument against the principle they call fair coins: “If you know a coin won’t land tails, then you know it won’t be flipped.” They argue for rejecting fair coins because it leads to a pervasive skepticism about knowledge of the future. We argue that the threshold view of evidence and knowledge gives independent grounds to reject fair coins.     

Status of the provoker,opportunity to retaliate,and interest in video violence

Two hypotheses derived from affect-dependent stimulus arrangement theory [Zillmann D, Bryant J (1985): In: “Selective Exposure to Communication.” Hillsdale, NJ: Erlbaum Associates.] were tested: (1) provoked persons will express less interest in seeing video violence than will those not provoked, unless they anticipate an opportunity to retaliate against their provocateur; and (2) when provoked persons anticipate an opportunity to retaliate against a provocateur who is not high status, they will express greater interest in seeing video violence than will those not provoked. After being provoked or not provoked by a high or low status experimenter, half the 160 male college student participants were led to believe that their evaluation of the experimenter would determine the experimenter's grade for conducting the research, and half were not given any reason to expect an opportunity to evaluate him. Then each man indicated his degree of interest in seeing each of twelve video selections that had been described in brief paragraphs, three each in four content categories: aggressive, humorous, mildly erotic, and neutral. In confirmation of the first hypothesis, provoked subjects who did not anticipate opportunity to retaliate expressed less interest in seeing aggressive material than did those not provoked. In relationship to the second hypothesis, provoked subjects showed the greatest interest in aggressive video material when they anticipated an opportunity to retaliate against a low status provocateur, but their interest was not greater than corresponding nonangered subjects. The effect of provocation upon interest in the other categories of video material was generally in line with what would be predicted from the theory. When there was no anticipated opportunity to retaliate, interest in humorous material was greater in provoked subjects than in those not provoked. In the case of the mildly erotic category of video selections, there was less interest expressed among provoked subjects when they anticipated having a chance to retaliate against a low status experimenter.     

The condom purchase task: A hypothetical demand method for evaluating sexual health decision-making

Behavioral economic theory has proved useful for understanding the influence of delay and probability on sexual health decision-making. Demand is another principle at the intersection of microeconomics and psychology that has helped advance research relevant to health behaviors. The purpose of the present study was to develop and test a demand measure related to sexual health decision-making and the influence of sexually transmitted infection (STI) risk. Participants (N = 438) recruited using Amazon Mechanical Turk completed a commodity purchase task assessing hypothetical condom demand. Condom demand was evaluated at varied prices for use with hypothetical sexual partners that varied in STI risk. Demand was characterized by prototypic decreases in consumption with increases in cost. Higher partner STI risk was associated with greater intentions for condom-protected sex at no cost and smaller decreases in condom demand with increases in cost. Price sensitivity was also related to individual difference factors relevant to sexual health (e.g., alcohol use severity, lower STI knowledge). This study supports the utility of a condom purchase task for indexing condom valuation and capturing individual difference and contextual risk factors relevant to STI transmission. Future studies may leverage this methodology as a means to study sexual health decision-making.     

Equity and derogation of those against whom we have aggressed

Casting the classic provocation-retaliation paradigm in an equity framework, we hypothesized that persons realizing their retribution was excessive would derogate their victim, but only when they did not anticipate an opportunity to compensate her. After retaliating against a peer who had harshly evaluated their essays, 40 female undergraduates were informed that either a serious or mild misfortune had recently been suffered by their partner, and were led to believe that at the outset of the experiment they had carelessly overlooked this “mitigating” information. Half the participants anticipated a later opportunity to do a favor for the other woman. Regardless of the severity of the mitigating information the women were more negative in their evaluation of the partner when they did not anticipate a subsequent opportunity to do the partner a favor. The results are discussed in terms of equity restoration in reactions to having aggressed. © 1993 Wiley-Liss, Inc.     

CAB: Connectionist Analogy Builder

The ability to make informative comparisons is central to human cognition. Comparison involves aligning two representations and placing their elements into correspondence. Detecting correspondences is a necessary component of analogical inference, recognition, categorization, schema formation, and similarity judgment. Connectionist Analogy Builder (CAB) determines correspondences through a simple iterative computation that matches elements in one representation with elements playing compatible roles in the other representation while simultaneously enforcing structural constraints. CAB shows promise as a process model of comparison as its performance can be related to human performance (e.g., solution trajectory, error patterns, time‐on‐task). Furthermore, CAB's bounded working memory allows it to account for the inherent capacity limitations of human processing. CAB's strengths are its parsimony, transparency of operations, and ability to generate performance predictions. In this paper, CAB is evaluated against benchmark phenomena from the analogy literature.     

Effects of daylight-saving time changes on stock market volatility: a comment

In a recent article in this journal, Berument, Dogan, and Onar (2010) challenged the existence of the previously documented daylight-saving effect. Kamstra, Kramer, and Levi's original finding (2000) was that average stock market returns on Mondays following time changes are economically and statistically significantly lower than typical Monday returns. Kamstra, et al. hypothesized that the effect may arise due to heightened anxiety or risk aversion on the part of market participants after they experience a 1-hr. disruption in their sleep habits, in accordance with prior findings in the psychology literature linking sleep desynchronosis with anxiety. Berument, et al. replicated the original findings using ordinary least squares estimation, but when they modeled the mean of returns using a method prone to producing biased estimates, they obtained puzzling results. The analysis here, based on standard, unbiased modeling techniques, shows that the daylight-saving effect remains intact in the U.S.