Lateralization of very-short-duration tone pulses of low and high frequencies

The position and image-width of the simultaneous images produced by very short tone pulses were measured as a function of interaural time difference (ITD) at both low- (250 and 800 Hz) and high- (2500 and 8000 Hz) frequencies using a direct-estimation technique.

Primary images are lateralized towards the ear receiving the leading stimulus. At low frequencies image position is proportional to interaural phase-difference (IPD) below 90° and remains at the lead-ear for larger values. At high frequencies image position is proportional to ITD up to 500-1000 μsec. Secondary images are reported on the opposite side of the head for IPDs greater than 180° at low frequencies, and at ITDs greater than 500 μsec at high frequencies. Image width is approximately constant for all ITDs and both images at a given frequency, but becomes more compact as frequency increases.

The data are discussed in terms of onset cues and stimulus fine-structure cues. The best explanation is in terms of an onset mechanism, but one that is calibrated in terms of IPD at low frequencies. The existence of double images is explained in terms of a breakdown in the mechanism determining fusion.     

The role of binaural and fundamental frequency difference cues in the identification of concurrently presented vowels

The relative importance of voice pitch and interaural difference cues in facilitating the recognition of both of two concurrently presented synthetic vowels was measured. The interaural difference cues used were an interaural time difference (400 μsec ITD), two magnitudes of interaural level difference (15 dB and infinite ILD), and a combination of ITD and ILD (400 μsec plus 15 dB). The results are analysed separately for those cases where both vowels are identical and those where they are different. When the two vowels are different, a voice pitch difference of one semitone is found to improve the percentage of correct reports of both vowels by 35.8% on average. However, the use of interaural difference cues results in an improvement of 11.5% on average when there is a voice pitch difference of one semitone, but only a non-significant 0.1% when there is no voice pitch difference. When the two vowels are identical, imposition of either a voice pitch difference or binaural difference reduces performance, in a subtractive manner. It is argued that the smaller size of the interaural difference effect is not due to a “ceiling effect” but is characteristic of the relative importance of the two kinds of cues in this type of experiment. The possibility that the improvement due to interaural difference cues may in fact be due to monaural processing is discussed. A control experiment is reported for the ITD condition, which suggests binaural processing does occur for this condition. However, it is not certain whether the improvement in the ILD condition is due to binaural processing or use of the improvement in signal-to-noise ratio for a single vowel at each ear.     

Responding to Those Who Hope for a Miracle: Practices for Clinical Bioethicists

Significant challenges arise for clinical care teams when a patient or surrogate decision-maker hopes a miracle will occur. This article answers the question, “How should clinical bioethicists respond when a medical decision-maker uses the hope for a miracle to orient her medical decisions?” We argue the ethicist must first understand the complexity of the miracle-invocation. To this end, we provide a taxonomy of miracle-invocations that assist the ethicist in analyzing the invocator's conceptions of God, community, and self. After the ethicist appreciates how these concepts influence the invocator's worldview, she can begin responding to this hope with specific practices. We discuss these practices in detail and offer concrete recommendations for a justified response to the hope for a miracle.     

Supporting the spiritual needs of people with dementia in residential aged care

ABSTRACT

Objective: To describe how an Australian age care provider, BaptistCare NSW & ACT, has embraced the National Guidelines for Spiritual Care in Aged Care for people with dementia.

Method: A 12-month study was conducted in 19 Baptistcare residential homes, including 14 dementia units. Data were obtained from selected items of the Person-Centred Environment and Care Assessment Tool using interviews, observation, and document review.

Results: The person-centred approach was instituted in adhering to the Guidelines for people with dementia. Conclusion: The person-centred approach assists in actioning the Guidelines for people with dementia.     

Sales Force Motivation Using Travel Incentives: Some Empirical Evidence

This study examines the use of travel incentives as motivators for a commission only life insurance sales force in the United Kingdom. A sample of 1,083 sales representatives reported that travel is a strong motivator and valued more highly than several other types of incentives.     

The state,the institution,and the patient: A three-way collison at the crossroads as a hospital fights closure

This paper recounts the story of a National Health Service hospital which was almost closed for financial reasons in 1990. After a political campaign carried out in the full glare of publicity, the Hospital was reprieved. The account is based on the author's conversations with members of staff. The story of the staff, the patients, the Hospital, and the political struggle are woven together by common themes which are highlighted by reference to the Oedipus myth.     

Cognitive-Behavioral Erectile Dysfunction Treatment for Gay Men

The purpose of the present paper is to assist cognitive-behavioral therapists who are treating erectile dysfunction among gay men. Little information is available to cognitive-behavioral therapists about the psychological and social effects of erectile dysfunction in this population, or how to incorporate the concerns of gay men with erectile dysfunction into a case conceptualization and treatment plan. The present paper provides an overview of the extant research on erectile dysfunction and of its treatment among gay men. The application of clinical research on erectile dysfunction to treatment for gay men will be illustrated using two case examples.     

Cosmetics: They Influence More Than Caucasian Female Facial Attractiveness

The study explored whether 4 Caucasian women would be evaluated differently on 4 social measures depending on whether they were presented with or without makeup. Participants—152 men and 171 women—were split into 2 groups and were presented with the women's facial photographs either with or without cosmetics. Women presented wearing cosmetics were perceived as healthier and more confident than when presented without. Participants also awarded women wearing makeup with a greater earning potential and with more prestigious jobs than the same women without cosmetics. The results suggest that women can successfully employ cosmetics to manipulate how they are assessed, which may be advantageous in social situations where women may be judged on their appearance, such as job interviews.