Retrieval-induced forgetting of arithmetic facts

Retrieval-induced forgetting (RIF) is a widely studied phenomenon of human memory, but RIF of arithmetic facts remains relatively unexplored. In 2 experiments, we investigated RIF of simple addition facts (2 + 3 = 5) from practice of their multiplication counterparts (2 × 3 = 6). In both experiments, robust RIF expressed in response times occurred only for high-strength small-number addition facts with sums ≤ 10, indicating that RIF from multiplication practice was interference dependent. RIF of addition-fact memory was produced by multiplication retrieval (2 × 3 = ?) but not multiplication study (2 × 3 = 6), supporting an inhibitory mechanism of RIF in arithmetic memory. Finally, RIF occurred with multiplication practiced in word format (three × four) and addition tested later in digit format (3 + 4), which provides evidence that digit and written-word formats for arithmetic accessed a common semantic retrieval network. The results support the view that addition and multiplication facts are stored in an interrelated semantic network and that RIF of competing addition facts is an intrinsic process of multiplication fact retrieval.     

Gender symmetry in intimate aggression: an effect of intimacy or target sex?

Men's greater use of direct aggression is not evident in studies of intimate partner aggression. In previous research, the effects of target sex and relationship intimacy have frequently been confounded. This study sought to examine these effects separately. One hundred and seventy-four participants (59 male and 115 female) read vignette scenarios in which they were provoked by a same-sex best friend, an opposite-sex best friend, and a partner. For each target, participants estimated their likely use of direct physical and verbal aggression as well as noninjurious forms of anger expression. Results showed that men lower their aggression in the context of an intimate partnership and that this is an effect of the target's sex. In contrast, women raise their aggression in the context of an intimate partnership and this is an effect of intimacy with the target. The use of noninjurious angry behavior did not vary between targets for either sex of the participant, which suggests that the effects of target are confined to behaviors which carry an intention to harm. Possible effects of social norms and oxytocin-mediated emotional disinhibition on intimate partner aggression are discussed.     

A First Step to Supporting the Coparenting Relationship and Reducing Child Behaviour Problems: A Delphi Consensus Study

Journal of Child and Family Studies - Parenting programs addressing coparenting skills are very effective in reducing problematic child behaviours. Barriers to participation in parenting programs...     

Discussing Adolescent Sexual Health in African-American Churches

This study describes the ways in which two African-American churches discuss adolescent sexual health topics. Six focus groups were conducted in two churches in Flint, Michigan, that reported no formal sexual health programming for their congregants. Three themes emerged to highlight the different perspectives about the role of churches in adolescent sexual decision-making and sexual health education: (1) churches as sources of sexual information, (2) churches as complex communities, and (3) recommendations for sexual education in churches. Participant responses suggest that churches can and should serve a resource for sexual health information. Implications for practice and research are discussed.     

Wittgenstein and the Expression of Feelings in Psychotherapy

Effective psychotherapy is often held to involve the expression of feelings. Within the person‐centred approach, this view has been especially emphasised by Carl Rogers and Eugene Gendlin. I am concerned with the question of why the expression of feelings can be therapeutically effective. Many psychotherapists picture feelings as “inner experiences” for which the client tries to find appropriate words, but the difficulties with this picture, which were highlighted by Wittgenstein, seem to call for a very different approach. Here, I develop a Wittgensteinian account of the expression of feelings that avoids the difficulties to which Wittgenstein draws attention.     

The Predictive Validity of Ideal Partner Preferences in Relationship Formation: What We Know,What We Don't Know,and Why It Matters

A great deal of research on interpersonal attraction implicitly assumes that stated ideal partner preferences guide the mate selection, and therefore relationship formation, process. Nevertheless, recent research has yielded contradictory results. Whereas some research has failed to demonstrate that ideal partner preferences influence attraction to actual potential romantic partners, other studies have provided empirical evidence for the predictive validity of ideal partner preferences following interactions with potential romantic partners. A new meta‐analysis on the predictive validity of ideal partner preferences concluded that people may not preferentially pursue potential partners that more closely match their stated preferences. This conclusion has significant implications for several empirical literatures that have relied on self‐reported ideal partner preferences to test hypotheses. We demonstrate, however, that the majority of the research on the predictive validity of ideal partner preferences, and thus research included in this meta‐analysis, focuses on interpersonal attraction or later relationship processes and not on individuals transitioning into actual new relationships. We suggest that research that directly focuses on the transition into actual relationships is needed before firm conclusions can be made regarding the predictive validity of ideal partner preferences in the formation of new relationships.     

Do wild New Caledonian crows (<Emphasis Type="Italic">Corvus moneduloides</Emphasis>) attend to the functional properties of their tools?

New Caledonian crows are the most proficient non-hominin tool manufacturers but the cognition behind their remarkable skills remains largely unknown. Here we investigate if they attend to the functional properties of the tools that they routinely use in the wild. Pandanus tools have natural barbs along one edge that enable them to function as hooking implements when the barbs face backwards from the working tip. In experiment 1 we presented eight crows with either a non-functional (‘upside-down’) or a functional pandanus tool in a baited hole. Four of the crows never flipped the tools. The behaviour of the four flipping birds suggested that they had a strategy of flipping a tool when it was not working. Observations of two of the eight crows picking up pandanus tools at feeding tables in the wild supported the lack of attention to barb direction. In experiment 2 we gave six of the eight crows a choice of either a barbed or a barbless pandanus tool. Five of the crows chose tools at random, which further supported the findings in experiment 1 that the crows paid little or no attention to the barbs. In contrast, a third experiment found that seven out of eight crows flipped non-functional stick tools significantly more than functional ones. Our findings indicate that the crows do not consistently attend to the presence or orientation of barbs on pandanus tools. Successful pandanus tool use in the wild seems to rely on behavioural strategies formed through associative learning, including procedural knowledge about the sequence of operations required to make a successful pandanus tool. Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users.     

Reasoning about make-believe and hypothetical suppositions: Towards a theory of belief-contravening reasoning

The present study explores how suppositions which conflict with accepted beliefs are represented and reasoned about. Two studies test the predictions regarding the nature and developmental changes in children's ability to represent and reason about hypothetical or make-believe suppositions which violate their everyday knowledge and beliefs. In Study 1, 46 4th- and 5th-graders were introduced to a hand puppet, Freddy, who made claims inconsistent with generally accepted beliefs (e.g., “all dogs meow”) because he was pretending (Make-Believe Condition) or believed them (Hypothetical Condition). Participants were asked to think like Freddy and judge whether a conclusion (“There's a dog; does it meow?”) follows logically from the claim. In Study 2, 40 kindergarten (6-year-olds), 3rd–4th grade (10-year-olds), and college students were asked to represent belief contravening make-believe (pretend in a make-believe world that dogs meow) and hypothetical (imagine what the real world would be like if dogs meow) premises, evaluate conclusions of the premises (Rover is a dog, does Rover meow?) and make judgments about the attributes (growl, wag tail, purr, and eat mice) of the entity (a meowing dog) they created. The prediction that it would be easier to represent and reason from belief-contravening suppositions in the Make-Believe than Hypothetical conditions was confirmed in each study, although the two forms of reasoning were directly correlated (Study 2). The results were discussed in terms of the similarities (compartmentalization and integration) and differences (reconciliation) of processes involved in fancifully (make-believe) or seriously (hypothetical) representing and reasoning about belief-contravening suppositions.     

Keith Lehrer on Compatibilism

Keith Lehrer has been publishing on free will and compatiblism since 1960. Our concern here is to present an account of the development on his work on the subject.