Factual Evidence without Knowledge

A central function of our evidence is to constrain the epistemic rationality of our propositional attitudes. Our knowledge does this. That fact supports Timothy Williamson's contention that our evidence is identical to our knowledge, ‘E=K’. But it is argued here that some true propositions are evidence without being known. Some of them cannot be known; others are contingently not known. Propositions play the rational role of evidence whenever they are clearly true, whether or not they are known.     

Variations in watch keeping performance as a function of the rate and duration of visual signals

This study was designed to assess the relative effects on watch keeping performance of five signal durations (0.5, 1.0, 2.0, 4.0, and 8.0sec) combined factorially with five signal rates (6, 12, 24, 48, and 96 sig/h). A visual display consisting of a red and green light mounted on a vertical vector was used; red-onset and green-offset were critical signals. The probability of correct detections increased monotonically with increases in signal duration; a stable rate of nearly 100% detection was approached at signal durations of 4.0 and 8.0 sec, independently of signal rates. The likelihood of detection was enhanced by increases in signal rates only at the 0.5-sec duration with the green-offset critical signal. Response time to correct detections increased with time on watch, independently of signal rates and durations.     

Reviews of current books

Pastoral Psychology -     

Chronic pain, meaning, and spirituality: A qualitative study of the healing process in relation to the role of meaning and spirituality

This qualitative study explores experiences of individuals with chronic pain in their attempt to find meaning in the presence of continual pain. Fifteen participants at Loma Linda University Behavioral Medicine Center were interviewed. Emerging themes from this study show that (1) meaning is initially defined as the ability to engage in productive activities and positive relationships; (2) chronic pain is perceived as the factor that removes meaning from the lives of sufferers; (3) medication is used to cope with pain, leading to addiction; (4) addiction results in greater loss of meaning; and (5) rediscovery of meaning takes place through a more complex understanding of the self that embraces suffering and thus is able to explain the interrelation of pain, emotions, and addiction. A change in self-understanding makes the reintegration of meaning possible.