A tribute to Howard Rachlin and his two-parameter discounting model: Reliable and flexible model fitting

Delay discounting reflects the rate at which a reward loses its subjective value as a function of delay to that reward. Many models have been proposed to measure delay discounting, and many comparisons have been made among these models. We highlight the two-parameter delay discounting model popularized by Howard Rachlin by demonstrating two key practical features of the Rachlin model. The first feature is flexibility; the Rachlin model fits empirical discounting data closely. Second, when compared with other available two-parameter discounting models, the Rachlin model has the advantage that unique best estimates for parameters are easy to obtain across a wide variety of potential discounting patterns. We focus this work on this second feature in the context of maximum likelihood, showing the relative ease with which the Rachlin model can be utilized compared with the extreme care that must be used with other models for discounting data, focusing on two illustrative cases that pass checks for data validity. Both of these features are demonstrated via a reanalysis of discounting data the authors have previously used for model selection purposes.     

Studies on temperament in Russia: After Teplov and Nebylitsyn

In this paper a review of studies on temperament in Russia conducted during the last two decades is presented. Special attention has been given to the linkage between the theoretical background of modern Russian psychology and the main tendencies in the development of Russian studies on temperament. Three main trends are discussed: the traditional trend referring to the classic (Pavlovian) approach, the behavioural one based on modern conceptions in behavioural sciences, and the personological approach which postulates a holistic (?integral’?) view on human individuality. Finally, the interrelationships between the main trends in research on temperament are considered.     

Modal Companions of $$K4^{+}$$

Studia Logica - We study modal companions of $$K4^+$$ , the strictly positive fragment of K4. We partially find the boundary between all normal extensions of K4 and modal companions of $$K4^+$$...     

The Demise of the First Secularization: The Church of Gogol and the Church of Belinsky

The article presents Gogol as marking the end of a century-long phase of secularism in Russian culture, from Peter the Great to Pushkin, and as the first writer to represent the cultural phenomenon of the ‘New Middle Ages’ and renewed religious zeal, first described by Berdyaev; further, it highlights some commonalities between Gogol and Belinsky and takes Belinsky as a leading instance of ‘religious atheism’. The article goes on to consider Russian culture’s need for neutral ‘middle ground’ between its multiple and extreme polarities and, in this context, highlights Sergej Averintsev’s plea for an orientation towards Aristotelianism. These are the opening two sections of a longer paper delivered at a conference on ‘Russian Culture at the Crossroads. Art and Society’ at the University of Nevada, Las Vegas,’ 24–25 November 1997. The title of the full paper is: ‘Russian Culture at the Crossroads: Secularization, Demonism and the Transition from a Binary to a Ternary Model.’     

A reinforcement learning diffusion decision model for value-based decisions

Psychonomic Bulletin & Review - Psychological models of value-based decision-making describe how subjective values are formed and mapped to single choices. Recently, additional efforts have...     

Do Problems of Clinic-Referred African-American Children Overlap with the Child Behavior Checklist?

Many factors contribute to children's psychopathology. African-American children, members of the largest U.S. minority group, are reportedly at high risk for psychopathology, but researchers and developers of diagnostic measures seldom focus on them. We surveyed the clinic records of 1,605 African-American children, ages 4–18. Coders recorded children's problems, their gender, and age. They coded children's problems according to the Child Behavior Checklist (CBCL). Overlap between some problems African-American children presented and CBCL items emerged but other problems did not match CBCL items. For problems which matched the CBCL, associations between such problems and children's age emerged and boys had more problems than girls. The content and cultural validity of the CBCL for African-American children may, however, be questionable.