‘Unwilling’ versus ‘unable’: capuchin monkeys’ (Cebus apella) understanding of human intentional action

A sensitivity to the intentions behind human action is a crucial developmental achievement in infants. Is this intention reading ability a unique and relatively recent product of human evolution and culture, or does this capacity instead have roots in our non‐human primate ancestors? Recent work by Call and colleagues (2004) lends credence to the latter hypothesis, providing evidence that chimpanzees are also sensitive to human intentions. Specifically, chimpanzees remained in a testing area longer and exhibited fewer frustration behaviors when an experimenter behaved as if he intended to give food but was unable to do so, than when the experimenter behaved as if he had no intention of giving food. The present research builds on and extends this paradigm, providing some of the first evidence of intention reading in a more distant primate relative, the capuchin monkey (Cebus apella). Like chimpanzees, capuchin monkeys distinguish between different goal‐directed acts, vacating an enclosure sooner when an experimenter acts unwilling to give food than when she acts unable to give food. Additionally, we found that this pattern is specific to animate action, and does not obtain when the same actions are performed by inanimate rods instead of human hands (for a similar logic, see Woodward, 1998 ). Taken together with the previous evidence, the present research suggests that our own intention reading is not a wholly unique aspect of the human species, but rather is shared broadly across the primate order.     

Re-imagining the (Dis)Abled Body

Disability imagery, whether photographs, posters, or verbal or written discourse, comprises multiple viewpoints or gazes, ranging from the impaired physical body to the disabling social environment. In some instances, photographic image and accompanying text combine to reinforce the notion of persons with disabilities as helpless and needy people. These conceptualizations not only emphasize obvious prejudices and limited thinking about persons with disabilities, but also illustrate the consequences: persons with disabilities tend to assimilate the oppressive images constructed by society. In order to create positive images of, for example, persons with brain injury, epilepsy or hemiplegia, we need to develop a disability consciousness that allows us to re-imagine (dis)ability in ways that value individual identity. In so doing, we raise critical questions about self and other.     

Increasing volunteering at a residential facility: An experimental evaluation of a volunteer assistance program

A helpful component for comprehensive residential services for developmentally disabled persons is volunteer assistance. This investigation involved the evaluation of a program developed to increase the amount of volunteer assistance provided to a public residential facility. The program consisted of three types of related procedures: systematic volunteer recruitment steps, specific volunteer activities at the facility, and consequence/recognition for the volunteer assistance. The program was successively implemented to involve students as volunteers from two local universities, and resulted in an increase in new students volunteering from both universities. Additionally, the frequency with which the students volunteered at the residential facility increased substantially from both universities relative to control periods during which the volunteer program was not in effect. Results are discussed in terms of the benefits of volunteers and continued research to increase involvement of other prospective groups of volunteers.     

Predicting sales skills

The purpose of this study was to validate a selection process designed to predict sales skills for a telephone sales job. First, a job analysis was performed (n=213) to identify the major functions and behavioral requirements of the job. Next, the test, a situational judgment inventory, was developed, and a concurrent criterion related validation study was completed (n=236). The criterion measures were supervisory ratings of performance. Validity coefficients ranged from r=.16 (p<.01) to r=.24 (p<.001). In conclusion, the situational judgment inventory was found an effective vehicle for measuring telephone sales skills.Sincere thanks to Roz Lobus for her assistance in the earlier phases of this study.     

Book reviews

International Journal for Philosophy of Religion -     

(RE)Inventing Scheffler,or, Defending Objective Educational Research

Israel Scheffler's book Science and Subjectivity (1967) was prescient: His criticisms of attacks on the traditional notions of objectivity and truth that underlie modern science are still relevant nearly thirty years later, when postmodernism and some varieties of feminist epistemology are winning many adherents. Two aspects of Scheffler's book are singled out for discussion – his philosophical style, which is marked by careful, well-developed, and detailed argument (in contrast to many contemporary writers in education who have postmodernist leanings, who merely make assertions about objectivity and so forth); and the actual content of the positions for which he argues.