Humean dispositionalism

Humean metaphysics is characterized by a rejection of necessary connections between distinct existences. Dispositionalists claim that there are basic causal powers. The existence of such properties is widely held to be incompatible with the Humean rejection of necessary connections. In this paper I present a novel theory of causal powers that vindicates the dispositionalist claim that causal powers are basic, without embracing brute necessary connections. The key assumptions of the theory are that there are natural types of causal processes, and that manifestations of powers are identified with certain kinds of causal processes. From these assumptions, the modal features of powers are explained in terms of internal relations between powers themselves and the process-types in which powers are manifested.     

Production and Identification Repetition Priming in AmnesticMild Cognitive Impairment

ABSTRACT

The experiment reported here examined implicit memory function, as measured through repetition priming, in amnestic mild cognitive impairment (MCI) to examine whether impairments exist in this aspect of memory function. Young adults, healthy older controls, Alzheimer's disease patients, and MCI participants were asked to perform two types of implicit memory tests (word stem completion and threshold identification repetition priming tasks), as well as a recognition test for studied items. As expected, young adults performed better than the other participants on the recognition test and the word stem completion task; there was equivalent priming across groups on the word identification task. While both the older control and MCI participants showed lower levels of priming on the word stem completion task relative to the young adults, the magnitude of priming was equivalent for these two groups, and reliably greater than that of the dementia participants. These results suggest that not all aspects of memory function are impaired in MCI relative to healthy aging.     

Modeling,tuition, and sanction effects on self-control at different ages

The effects of age, modeling, tuition, and sanctions on self-control of motor behavior were examined. Children 6, 7, 9, and 11 years of age individually participated. A male model either: (a) instructed and performed “Simon Says” in the traditional manner, (b) introduced the sanction “Don't” on the inhibition trials, (c) performed an action that differed from the instruction, or (d) gave instructions only. Activation latency and inhibition error were influenced most greatly by the actions of the model and the introduction of a negative sanction, whereas tuition was less effective. Age differences were present for inhibition errors as well as activation latency and error. The discussion focused on the differential effects of modeling and tuition on deviant responding.     

Situational,Interpersonal, and Intrapersonal Characteristic Associations With Adolescent Conflict Forgiveness

Given the voluntary nature of adolescent friendships, forgiveness of interpersonal transgressions has been identified as a critical aspect of maintaining these relationships. However, transgression forgiveness is related to a range of situational (e.g., transgression severity), interpersonal (e.g., friendship commitment), and intrapersonal (e.g., victim's empathy) factors. Data from 161 adolescents were used to examine the nature of the relationships between these factors and forgiveness and to examine the differential association patterns for adolescent boys and girls. Results for the overall adolescent sample indicated both situational and interpersonal factor associations with forgiveness (R ² = .52, p < .001). Examination of separate female and male forgiveness reports indicated similar interpersonal factor associations and differential situational factor associations with female (R ² = .46, p < .001), and male (R ² = .60, p < .001) forgiveness. Findings suggest the likelihood of forgiving may be contextually dependent, and that researchers should consider transgression, relationship, and intrapersonal characteristics when examining forgiveness. Further, the present study suggests the contextual factors associated with forgiveness may be further differentiated by gender.     

Relevant Restricted Quantification

The paper reviews a number of approaches for handling restricted quantification in relevant logic, and proposes a novel one. This proceeds by introducing a novel kind of enthymematic conditional.