Harold A. Herzog

Gender Differences in Human–Animal Interactions: A Review

ABSTRACT I review the direction and magnitude (effect sizes) of gender differences that have been reported in several areas of human–animal interactions. These include: attitudes toward the treatment of animals, attachment to pets, involvement in animal protectionism, animal hoarding, hunting, animal abuse, and bestiality. Women, on average, show higher levels of positive behaviors and attitudes toward animals (e.g., attitudes towards their use, involvement in animal protection), whereas men typically have higher levels of negative attitudes and behaviors (e.g., hunting, animal abuse, less favorable attitudes toward animal protection). The effect sizes of gender differences range from small (e.g., attachment), to medium size (e.g., attitudes toward animal use) to large (e.g., animal rights activism, animal abuse by adults.) In most areas, there is considerable overlap between men and women, with much greater within-sex than between-sex variation. Research on the roles of gender in human–animal relationships is hindered by the omission in many reports of gender difference effect sizes and basic descriptive statistics.

The Impact of Pets on Human Health and Psychological Well-Being: Fact, Fiction, or Hypothesis?

Because of extensive media coverage, it is now widely believed that pets enhance their owners’ health, sense of psychological well-being, and longevity. But while some researchers have reported that positive effects accrue from interacting with animals, others have found that the health and happiness of pet owners is no better, and in some cases worse, than that of non–pet owners. I discuss some reasons why studies of the effects of pets on people have produced conflicting results, and I argue that the existence of a generalized “pet effect” on human mental and physical health is at present not a fact but an unsubstantiated hypothesis.

Personality and Attitudes Toward the Treatment of Animals

The authors examined the relationship between personality and attitudes toward the treatment of animals by administering the Sixteen Personality Factor Inventory and the Animal Attitudes Scale to 99 college students. The personality scales were only weakly related to attitudes about animal welfare issues. Two personality factors, sensitivity and imaginativeness, were significantly correlated with attitudes towards animals. Gender and sensitivity explained 25% of the variance in attitudes, with most of the variance accounted for by gender.

Random drift and large shifts in popularity of dog breeds

A simple model of random copying among individuals, similar to the population genetic model of random drift, can predict the variability in the popularity of cultural variants. Here, we show that random drift also explains a biologically relevant cultural phenomenon—changes in the distributions of popularity of dog breeds in the United States in each of the past 50 years. There are, however, interesting deviations from the model that involve large changes in the popularity of certain breeds. By identifying meaningful departures from our null model, we show how it can serve as a foundation for studying culture change quantitatively, using the tools of population genetics.

Development of antipredator responses in snakes: II. Effects of recent feeding on defensive behaviors of juvenile garter snakes (Thamnophis sirtalis).

The effect of having eaten a large meal (50% of body weight) on the defensive behavior of juvenile garter snakes (Thamnophis sirtalis)was investigated. Twenty-five 10-wk-old snakes were tested for antipredator responses (strikes) directed toward a threatening stimulus (moving and nonmoving human hand) before and after having eaten a large worm segment. Snakes directed significantly (p < .001) more strikes at both moving and nonmoving stimuli when tested 4 hr after feeding, but the number of snakes fleeing from the stimuli was not affected.

Stimulus control of antipredator behavior in newborn and juvenile garter snakes (Thamnophis)

Used neonate and juvenile garter snakes (Thamnophis sirtalis, T. melanogaster, and T. butleri) to investigate the role of visual stimuli in mediating antipredator behaviors and to examine the validity of techniques used to assess defensive responses

Animals, Archetypes, and Popular Culture: Tales from the Tabloid Press

AbstractThis paper characterizes the portrayal of animals and human-animal relations in one genre of American popular culture—the “supermarket” tabloid press. A total of 789 animal-related stories and photographs in 82 issues of four tabloid magazines were analyzed according to theme. The items fell into nine categories in which animals were portrayed as objects of affection, saviors, threats, victims, things to be used, sex objects, imaginary and mythological beings, surrogate humans, and objects of wonder. It is argued that these themes represent archetypes reflecting the roles that animals have had in human cultural and psychological life since the historical origins of our species.

Forty-two Thousand and One Dalmatians: Fads, Social Contagion, and Dog Breed Popularity

Like other cultural variants, tastes in companion animals (pets) can shift rapidly. An analysis of American Kennel Club puppy registrations from 1946 through 2003 (N = 48,598,233 puppy registrations) identified rapid but transient large-scale increases in the popularity of specific dog breeds. Nine breeds of dogs showed particularly pronounced booms and busts in popularity. On average, the increase (boom) phase in these breeds lasted 14 years, during which time annual new registrations increased 3,200%. Equally steep decreases in registrations for the breeds immediately followed these jumps in popularity. The existence of extreme fluctuations in preferences for dog breeds has implications for understanding changes in attitudes toward companion animals, veterinary epidemiology, and canine evolution.

Fashion vs. Function in Cultural Evolution: The Case of Dog Breed Popularity

We investigate the relationship between characteristics of dog breeds and their popularity between years 1926 and 2005. We consider breed health, longevity, and behavioral qualities such as aggressiveness, trainability, and fearfulness. We show that a breeds overall popularity, fluctuations in popularity, and rates of increase and decrease around popularity peaks show typically no correlation with these breed characteristics. One exception is the finding that more popular breeds tend to suffer from more inherited disorders. Our results support the hypothesis that dog breed popularity has been primarily determined by fashion rather than function.

Animal Rights Talk: Moral Debate over the Internet

Messages sent over Animal Rights-Talk, an electronic mail network devoted to the discussion of issues related to the animal rights movement, were analyzed. Messages typically fell into the following categories: questions and information, discussions of philosophical issues, ethical problems associated with the treatment of particular species, the politics of the animal rights movement, problems of moral consistency, the ethics of particular uses of non-human species (e.g., meat consumption, biomedical research with animal subjects), and matters pertaining to the internal life of the network (e.g., efforts at control of perceived norm violations). Debates between animal activists and animal researchers over the network often reflected the conflicting cosmologies of scientists and animal protectionists. We argue that computer bulletin boards offer a potentially important avenue for qualitative research.