Contingent Stimuli Signal Subsequent Reinforcer Ratios

Conditioned reinforcer effects may be due to the stimulus' discriminative rather than its strengthening properties. While this was demonstrated in a frequently‐changing choice procedure, a single attempt to replicate in a relatively static choice environment failed. We contend that this was because the information provided by the stimuli was nonredundant in the frequently‐changing preparation, and redundant in the steady‐state arrangement. In the present experiments, 6 pigeons worked in a steady‐state concurrent schedule procedure with nonredundant informative stimuli (red keylight illuminations). When a response‐contingent red keylight signaled that the next food delivery was more likely on one of the two alternatives, postkeylight choice responding was reliably for that alternative. This effect was enhanced after a history of extended informative red keylight presentation (Experiment 2). These results lend support to recent characterizations of conditioned reinforcer effects as reflective of a discriminative, rather than a reinforcing, property of the stimulus.     

Effects of syllable structure in aphasic errors: implications for a new model of speech production

Current models of word production assume that words are stored as linear sequences of phonemes which are structured into syllables only at the moment of production. This is because syllable structure is always recoverable from the sequence of phonemes. In contrast, we present theoretical and empirical evidence that syllable structure is lexically represented. Storing syllable structure would have the advantage of making representations more stable and resistant to damage. On the other hand, re-syllabifications affect only a minimal part of phonological representations and occur only in some languages and depending on speech register. Evidence for these claims comes from analyses of aphasic errors which not only respect phonotactic constraints, but also avoid transformations which move the syllabic structure of the word further away from the original structure, even when equating for segmental complexity. This is true across tasks, types of errors, and, crucially, types of patients. The same syllabic effects are shown by apraxic patients and by phonological patients who have more central difficulties in retrieving phonological representations. If syllable structure was only computed after phoneme retrieval, it would have no way to influence the errors of phonological patients. Our results have implications for psycholinguistic and computational models of language as well as for clinical and educational practices.     

Contingency and changing reality: Perspectives from Germany

The World Wide Web connects less and disconnects more. In Germany as in the United States, disconnecting factions digitize their ideologies and overnight multiply their adherents. Such forces of disruption are incessant. Appeal to constructivist theory reveals that beneath this destabilizing dynamic is awareness of contingency, the feeling of disempowerment in the face of an unpredictable and uncontrollable future. Religion has the potential for stabilizing, but religious leaders will need to reignite a faith in the future to make this happen.     

On the longitudinal interplay between perfectionism and general affect in adolescents

Cross-sectional studies on perfectionism and general affect tend to interpret their findings suggesting affect is an outcome of perfectionism. However, personality theories posit that individual differences in general affect may also influence perfectionism. Expecting to find bidirectional relations, this 3-wave study sought to examine the longitudinal interplay between perfectionism and general affect in a sample of 489 adolescents (54% female) aged 12–19 years. Cross-lagged panel analyses showed a positive unidirectional effect from positive affect to perfectionistic standards as well as a positive bidirectional effect between perfectionistic concerns and negative affect. As expected, general affect was both an antecedent and an outcome of perfectionism. Implications of the findings for the development and outcomes of perfectionism are discussed.     

Psychometric properties of the Turkish version of the Flourishing Scale and the Scale of Positive and Negative Experience

ABSTRACT

The Flourishing Scale (FS) and the Scale of Positive and Negative Experience (SPANE) are scales that are newly introduced to evaluate well–being. The present study aims to assess the psychometric distinctive features of two scales by utilising two different Turkish samples: university students (n?=?320), and employees (n?=?180). Confirmatory factor analysis results demonstrate that a one-factor model of the FS and a two–factor model of the SPANE yield significant findings in those samples. Scales’ factorial structures are valid for gender groups also they have good internal consistency. Concurrent validity, and discriminant validity with the use of several conceptually related and unrelated measures in two samples reveal satisfactory validity results for both the FS and the SPANE. The results of the present study show the utility of these scales in Turkish culture.     

Authority as a contingency plan

Humean constructivists object to Kantian constructivism that by endorsing the constitutivist strategy, which grounds moral obligations in rational agency, this position discounts the impact of contingency in moral life. In response to these charges, I argue that Humeans misrepresent the challenge of contingency and fail to provide adequate resources to cope with it. In its formalist variety, Humean constructivism fails to make sense of an important category of ethical judgments, which claim universal authority. The substantive varieties of Humean constructivism recognize that some ethical judgments aspire to universality, but fail to fully justify such an aspiration. These versions of constructivism represent a setback in regard to the achievements of Kantian constructivism. In conclusion, I briefly resume the advantages of advocating a Kantian conception of rational authority as a response to contingency.