Word length effect in early reading and in developmental dyslexia

Vocal reaction times were measured in Italian dyslexics and in proficient readers while they read single words. Three groups of control participants (for a total of 79) were tested. All were in the first, second or third grade of elementary school. Nine third graders with a low level of reading ability when assessed by standard reading procedures were also tested. Results indicated that vocal RTs of control participants were faster and less sensitive to word length as a function of age; also, there was a particularly marked change between first and second graders. Dyslexics' vocal RTs and errors were much worse than those of peer control participants and resembled those of first grade controls. It is suggested that normal readers in an orthographically transparent language (Italian) adopt a lexical strategy quite early in their learning. On the contrary, dyslexics seem unable to learn this mode of processing and continue to use a sub-lexical reading procedure.     

Individual and Collective Intentionality: Elaborating the Fundamentality-Question

This is a contribution to the controversy which of individual or collective intentionality is more fundamental. I call it the fundamentality-question. In a first step, I argue that it is really two questions. One is about sense and one about reference. The first is: Can one grasp or understand the concept individual intentionality and, correspondingly, individuality, on the one hand, without grasping or understanding the concept collective intentionality and, correspondingly, collectivity, on the other? The second is: Can the concept individual intentionality and corresponding concept of individuality, on the one hand, refer to something without the concept of collective intentionality and corresponding concept of collectivity referring to something, on the other? Simplifying somewhat, this elaborated fundamentality-question admits of nine answers. In a second step, I pursue a tentative answer to the elaborated fundamentality-question. Given a disambiguation of individuality and, correspondingly, individual intentionality, the answer is the combination of claims that individuality and individual intentionality in one sense is fundamental in reference-dependence but that collectivity and collective intentionality is fundamental in reference-dependence in the other sense of individuality, while collectivity and collective intentionality is in both cases fundamental in sense-dependence.

     

Prenatal cigarette exposure and infant learning stimulation as predictors of cognitive control in childhood

Prenatal exposures to neurotoxins and postnatal parenting practices have been shown to independently predict variations in the cognitive development and emotional-behavioral well-being of infants and children. We examined the independent contributions of prenatal cigarette exposure and infant learning stimulation, as well as their inter-relationships in predicting variations in the proficiency of executive attention, a core element of cognitive control and self-regulation. Participants were an ethnic-racially, socio-economically diverse sample of 249 children followed from birth in the Project on Human Development in Chicago Neighborhoods. We obtained histories of prenatal exposure to alcohol, cigarettes, and other drugs, and we assessed socio-economic status and learning stimulation during a home visit when the participants were infants. In childhood we utilized the Attention Networks Test to assess the proficiency of executive attention during two home visits, one year apart. Accounting for age, SES, prenatal alcohol exposure, and baseline performance, we found that prenatal cigarette exposure impaired the speed of executive attention. Infant learning stimulation mitigated these effects, and predicted better accuracy of executive attention as well, suggestive of both protective and health promoting effects. Effect sizes for these relations, whether examined independently or by their inter-relationships, were comparable to if not greater in magnitude than the effects of age on speed and accuracy, highlighting the importance of these very early experiences in shaping the proficiency of self-regulation. Since executive attention is central to cognitive control and self-regulation, previously described relations between prenatal cigarette exposure, parenting practices, and some forms of childhood psychopathology may be contingent on how early learning stimulation contributes to the proficiency of executive attention through direct and indirect effects. Furthermore, considering the prolonged developmental trajectory of executive attention, interventions to support provision of learning stimulation may mitigate poor outcomes for some at-risk children by promoting development of more proficient executive attention.     

The emotional cost of charitable donations

Donations in support of a charitable cause can create a conflict between moral intuitions (e.g., fulfilling moral obligations and helping as many individuals in need as possible) and the cost entailed by following one's moral intuitions (e.g., spending money). The present paper investigates this conflict by putting people in a situation in which they must choose whether to help three women by giving more money or help one woman by giving less. In addition, the paper uses the attraction effect paradigm to counteract the single victim effect and reduce the conflict. Experiment 1 demonstrates that in a two-alternative context the majority of participants choose to help one woman by giving €150 instead of helping three women by giving €450. Experiment 2 replicates this finding and highlights the role of emotion regulation strategies in the management of the emotional conflict arising in the two-alternative condition. In both studies, the introduction of a third, dominated alternative reduces the conflict and makes it easier to choose the programme asking for a higher donation and helping three women. Implications for charitable donations and the role of the conflict between moral intuitions and economic costs are discussed.     

‘Three is better than two’: Increasing donations with the attraction effect

Five experiments (N_total = 2,503) tested the attraction effect and its boundary conditions in the context of helping behaviour. Participants could choose one donation appeal in a set of either two or three alternatives. The three alternatives set included a decoy – an alternative that resembled but was clearly inferior to a target (i.e., the most beneficial) alternative. A clear and consistent pattern emerged: Participants chose the target alternative more frequently and perceived it as more beneficial (and somewhat less costly) when the decoy was present compared to when it was absent. This finding was robust when the attribute ratings of the alternatives were unclear, when the target alternative offered a bundle of unrelated products, and when participants could refrain from donating altogether, or contribute any amount they wished. Our findings offer concrete and simple strategies that charities can implement at zero cost to increase giving and the perceived benefits that people’s good deed bring about to those in need.     

Book reviews

Friedman, M.I., Tordoff, M.G., & Kare, M.R. (Eds.) (1991). Chemical senses, Volume 4: Appetite and Nutrition. New York: Marcel Dekker Inc. Pp. 491. ISBN 0-8247-8371-9. $150.

Smith, J.A., & Boyd, K.M. (1991). Lives in the balance: The ethics of using animals in biomedical research. Oxford: Oxford University Press. Pp. xvi + 352. ISBN 0-19-8547447. £19.50.

Davis, H. and Balfour, D. (Eds.) (1992). The inevitable bond. Examining scientist-animal interactions. Cambridge: Cambridge University Press. Pp. 399. ISBN 0-521-40510-6. £45.00.