Reading without phonology?

Responses to items such as brane are slower and/or more error prone than responses to items such as slint in lexical decision (is this string spelt like a real word?). The received view is that this “pseudohomophone” effect is attributable to phonological receding. Taft (1982) has challenged this view, offering instead a grapheme-grapheme account which assumes that graphemes that map onto a common phoneme develop the ability to activate each other without reference to phonological mediation.

Taft's grapheme-grapheme account is tested in two experiments. Experiment 1 shows that the presentation of a pseudohomophone facilitates the response to a subsequently presented word (e.g., groce-gross). Experiment 2 shows that nonword letter strings that are translatable into words by the application of putative grapheme-grapheme rules (e.g., gloce-gloss) produce no facilitation. These results are consistent with the notion of a phonological influence but inconsistent with the grapheme-grapheme account. Loci for this pseudohomophone priming effect are discussed.     

A zero-bounded model of operant demand

Contemporary approaches for evaluating the demand for reinforcers use either the Exponential or the Exponentiated model of operant demand, both derived from the framework of Hursh and Silberberg (2008). This report summarizes the strengths and complications of this framework and proposes a novel implementation. This novel implementation incorporates earlier strengths and resolves existing shortcomings that are due to the use of a logarithmic scale for consumption. The Inverse Hyperbolic Sine (IHS) transformation is reviewed and evaluated as a replacement for the logarithmic scale in models of operant demand. Modeling consumption in the “log₁₀-like” IHS scale reflects relative changes in consumption (as with a log scale) and accommodates a true zero bound (i.e., zero consumption values). The presence of a zero bound obviates the need for a separate span parameter (i.e., k) and the span of the model may be more simply defined by maximum demand at zero price (i.e., Q₀). Further, this reformulated model serves to decouple the exponential rate constant (i.e., α) from variations in span, thus normalizing the rate constant to the span of consumption in IHS units and permitting comparisons when spans vary. This model, called the Zero-bounded Exponential (ZBE), is evaluated using simulated and real-world data. The direct reinstatement ZBE model showed strong correspondence with empirical indicators of demand and with a normalization of α (ZBEn) across empirical data that varied in reinforcing efficacy (dose, time to onset of peak effects). Future directions in demand curve analysis are discussed with recommendations for additional replication and exploration of scales beyond the logarithm when accommodating zero consumption data.     

Against Unconditional Love

Abstract While unconditional love is frequently regarded as the best kind of romantic commitment, our commitments in general are not thought to be unconditional. In other contexts, we think conditional commitment (commitment which can in some sense be rendered intelligible by appeal to reasons) to be superior. This paper examines the peculiar status of unconditional love in the romantic context and argues that it is unwarranted; the best kind of romantic commitment should be viewed as conditional. The first part of the paper examines and criticises those arguments which attempt to defend conditional love by appeal to the idea that love is based upon the properties of the beloved. The second part of the paper examines Harry Frankfurt's narrowly subjective conception of unconditional love and highlights certain counterintuitive consequences of it. The final section of the paper argues that the best kind of love will prompt us to adopt two perspectives with regard to the beloved. While loving does involve the narrowly subjective perspective defended by Frankfurt, it also demands that we strive for a more objective perspective, which takes into consideration the reasons we might be able to offer to render our commitment intelligible to others.     

In Honor of My Father and My Son

The author advises survivors on the four tasks of grief and reflects on the suicide of her college-age son in 1977 and the recent death of her father, a suicidologist, from age-related causes. She describes current collaborative efforts by organizations dedicated to the prevention and aftermath of suicide.     

Learning of object-object associations by monkeys

Monkeys were trained in tasks where stimulus objects were presented in pairs, one object of a pair concealing the other, and the monkeys had to displace the top object followed by the bottom object in order to obtain a food reward. In two experiments it was demonstrated that under these conditions the animals formed object-object associations such that the top object recalled in memory the bottom object that had previously been found underneath it. The monkeys were able to discriminate in recall between bottom objects that were identical in secondary reinforcing value and differed only in colour.