Reading Abraham Lincoln: An Expert/Expert Study in the Interpretation of Historical Texts

This study explored how historians with different background knowledge read a series of primary source documents. Two university-based historians thought aloud as they read documents about Abraham Lincoln and the question of slavery, with the broad goal of understanding Lincoln's views on race. The first historian brought detailed content knowledge to the documents; the second historian was familiar with some of the themes in the documents but quickly became confused in the details. After much cognitive flailing, the second historian was able to piece together an interpretative structure that brought him by the task's end to where his more knowledgeable colleague began. Data analysis focused on how, lacking detailed content knowledge, this historian was able to regain his intellectual footing, work through confusion, and resist the urge to simplify. Implications of this work for cognitive analyses in history and education are discussed.     

Myths and Small Groups: Development, Managed Care, and the Year 2000

In this article, the author defines myth and shows that disguised myths of archaic and primitive peoples can be found in the modern world. He discusses the myths that guide the development of small groups. He sketches out mythic aspects of the encounter between group therapy and managed care. Finally, he suggests the mythic significance of the year 2000 for the future of group development and of group therapy.     

Personhood,consciousness, and god: how to be a proper pantheist

International Journal for Philosophy of Religion - In this paper I develop a theory of personhood which leaves open the possibility of construing the universe as a person. If successful, it removes...     

What’s in a voice? Dolphins do not use voice cues for individual recognition

Most mammals can accomplish acoustic recognition of other individuals by means of “voice cues,” whereby characteristics of the vocal tract render vocalizations of an individual uniquely identifiable. However, sound production in dolphins takes place in gas-filled nasal sacs that are affected by pressure changes, potentially resulting in a lack of reliable voice cues. It is well known that bottlenose dolphins learn to produce individually distinctive signature whistles for individual recognition, but it is not known whether they may also use voice cues. To investigate this question, we played back non-signature whistles to wild dolphins during brief capture-release events in Sarasota Bay, Florida. We hypothesized that non-signature whistles, which have varied contours that can be shared among individuals, would be recognizable to dolphins only if they contained voice cues. Following established methodology used in two previous sets of playback experiments, we found that dolphins did not respond differentially to non-signature whistles of close relatives versus known unrelated individuals. In contrast, our previous studies showed that in an identical context, dolphins reacted strongly to hearing the signature whistle or even a synthetic version of the signature whistle of a close relative. Thus, we conclude that dolphins likely do not use voice cues to identify individuals. The low reliability of voice cues and the need for individual recognition were likely strong selective forces in the evolution of vocal learning in dolphins.     

The Integration of Personal Identity,Religious Identity,and Moral Identity in Emerging Adulthood

The present study investigated the relative roles of identity structure (i.e., personal identity) and identity contents (i.e., religious identity and moral identity) in predicting emerging adults’ prosocial and antisocial behaviors. The sample included 9,495 college students. A variable-centered analysis (path analysis) used personal identity, religious identity, and moral identity as predictors of prosocial and antisocial behavior and tested interactions of personal identity with religious identity and moral identity. Moral identity was the strongest predictor of both behaviors, and religious identity and moral identity both interacted with personal identity in predicting antisocial behavior. A person-centered analysis (latent profile analysis) found three classes: integrated, moral identity–focused, and religious identity–focused, with integrated being most adaptive on both outcomes.