Choice by rats for enriched versus standard home cages: Plastic pipes, wood platforms, wood chips, and paper towels as enrichment items

The purpose of the present study was to determine whether simple additions to the home cages of rats made those cages preferable to standard housing arrangements. Results indicated that most rats preferred cages with wood platforms, wood chips, and paper towels to otherwise identical cages without these items. Wood chips were not, however, practical with the cages used in the present study. Plastic pipes caused no problems but were not preferred by most animals. Both wood platforms and paper towels created no problems and appeared to be useful as enrichment items. The latter were preferred to the former in a direct comparison.     

ANIMAL SUFFERING,EVOLUTION, AND THE ORIGINS OF EVIL: TOWARD A “FREE CREATURES” DEFENSE

Does an affirmation of theistic evolution make the task of theodicy impossible? In this article, I will review a number of ancient and contemporary responses to the problem of evil as it concerns animal suffering and suggest a possible way forward which employs the ancient Jewish insight that evil—as resistance to God's will that results in suffering and alienation from God's purposes—precedes the arrival of human beings and already has a firm foothold in the nonhuman animal world long before humans are ever tempted to go astray. This theological intuition is conferred renewed relevance in light of the empirical reality of evolutionary gradualism and continuity and in view of the recent findings of cognitive ethology. Consequently, I suggest that taking biological evolution seriously entails understanding “moral evil” as a prehuman phenomenon that emerges gradually through the actions and intentions of “free creatures” which—as evolutionary history unfolded—increasingly possessed greater levels of freedom and degrees of moral culpability.     

Animal research in the Journal of Applied Behavior Analysis

This review summarizes the 6 studies with nonhuman animal subjects that have appeared in the Journal of Applied Behavior Analysis and offers suggestions for future research in this area. Two of the reviewed articles described translational research in which pigeons were used to illustrate and examine behavioral phenomena of applied significance (say-do correspondence and fluency), 3 described interventions that changed animals' behavior (self-injury by a baboon, feces throwing and spitting by a chimpanzee, and unsafe trailer entry by horses) in ways that benefited the animals and the people in charge of them, and 1 described the use of trained rats that performed a service to humans (land-mine detection). We suggest that each of these general research areas merits further attention and that the Journal of Applied Behavior Analysis is an appropriate outlet for some of these publications.     

Changing One’s Mind on Moral Matters

Contemporary moral philosophy assumes an account of what it means to legitimately change one’s mind in ethics, and I wish to challenge this account by enlarging the category of the legitimate. I am just as eager to avoid illegitimate mind-changing brought on by deceit or brainwashing, but I claim that legitimacy should be defined in terms of transparency of method. A social reformer should not be embarrassed to admit that he acquired many beliefs about justice while reading Dickens. As such, appeals to the heart and the imagination are just as legitimate, within limits, as appeals to the mind; and showing can be as legitimate as telling. To demonstrate this, I consider the example of a vegetarian trying to ‘convert’ a carnivore. I then ask what it means when the carnivore claims to have been previously mistaken.