Sex differences in the antecedents of animal use attitudes

Abstract

Sex differences in attitudes toward the use of animals have been reported in previous research. This study examines sex differences in the levels of, and the interrelations among, three potential antecedents of attitudes toward animal use: caring value orientation, pet care experience and attachment to pets. Path analysis showed that pet care experience, through attachment to pets, accounted for a significant portion of variance in animal use attitudes in both males and females. Caring value orientation was directly linked to animal use attitudes in females, but in males, caring value orientation affected attachment to pets, which in turn impacted on animal use attitudes. Results are discussed in terms of Gilligan's theory of socialization.     

Child–Companion Animal Attachment Bonds in Single and Two-Parent Families

ABSTRACT

This study addressed the issue of whether children who potentially have reduced access to parental resources have a stronger attachment bond with a dog, compared with children who have greater access. The study compared children in single-parent families with those in two-parent families on level of attachment to their family dog. Parents judged children's level of attachment to dogs by completing the Companion Animal Bonding Scale. The children's ages ranged between three and twelve years. Overall, children in single-parent families did show significantly higher levels of attachment to dogs than children in two-parent families. A comparison of attachment to dogs across family type showed that children in the early childhood stage in single-parent families had significantly higher levels of bonding with dogs than children in the early childhood stage in two-parent families. For the middle childhood stage there was no significant difference between family type and attachment to dogs. Comparisons within family type showed mixed results, and there were no significant gender differences in attachment levels across family type. Findings are discussed in light of attachment theory, family systems theory and implications for child development.     

Re-Evaluation of the Companion Animal Bonding Scale

ABSTRACT

This study re-evaluated the Companion Animal Bonding Scale (Poresky, Hendrix, Mosier and Samuelson 1987) using a wide range of developmental levels. Participants included 714 individuals (284 boys and 430 girls) from fourth grade to undergraduate college status. The elementary, middle, and high school students were enrolled in a public school system in a large metropolitan area and the college students were enrolled in a medium size state university. The sample included 600 Caucasians and 114 members of other ethnic groups. Only responses from current pet owners (n=610) were included in data analysis. Analysis of the Companion Animal Bonding Scale revealed three factors related to human-animal attachment: (1) emotional bond/affectional tie, (2) physical proximity, and (3) caretaking. The caretaking factor found in this study differs from the third factor (animal responsiveness and autonomy) reported by Poresky et al. (1987). The three factors in this study also differ somewhat from those reported by Poresky (1997). The results of this study are discussed within the context of attachment theory.     

Testing attachment point theory: diatom attachment on microtextured polyimide biomimics

Abstract

This paper explores diatom attachment to a range of laser etched polyimide surfaces to directly test ‘attachment point theory’. Static bioassays were conducted on microtextured polyimide surfaces using four diatom species, Fallacia carpentariae, Nitzschia cf. paleacea, Amphora sp. and Navicula jeffreyi with cell sizes ranging from 1 – 14 μm. The microtextured polyimides were modelled from natural fouling resistant bivalve surfaces and had wavelengths above, below and at the same scale as the diatom cell sizes. Diatoms attached in significantly higher numbers to treatments where the numbers of attachment points was highest. The lowest diatom attachment occurred where cells were slightly larger than the microtexture wavelength, resulting in only two theoretical points of attachment. The results support attachment point theory and highlight the need to address larval/cell size in relation to the number of attachment points on a surface. Further studies examining a range of microtexture scales are needed to apply attachment point theory to a suite of fouling organisms and to develop structured surfaces to control the attachment and development of fouling communities.     

Childhood Neglect,Attachment to Companion Animals,and Stuffed Animals as Attachment Objects in Women and Men

ABSTRACT

Childhood neglect has severe, pervasive, negative outcomes that often continue into adulthood. As a potential source of support for both children and adults, companion animals (pets) can both give and receive affection and therefore may be sources of healthy attachment for people who were raised in negative situations. Toy stuffed animals, in contrast, can only receive affection but may still be useful as transitional objects, particularly for people who experienced interpersonal neglect in childhood and who are in the midst of a transition away from the family home and into college. The current study examined the relationships among childhood neglect, companion animal attachment, and attachment to toy stuffed animals. Undergraduate participants (n = 457) from a large regional university answered questionnaires online. The first hypothesis, that self-reported childhood neglect would be positively related to attachment to companion animals, was supported for women only. Neglected women were more attached to companion animals than were non-neglected women, with a medium effect size. For men, there was no significant effect. The second hypothesis was that childhood neglect would be positively related to attachment to stuffed animals; this hypothesis was not supported. The third hypothesis, that women would be more attached to both companion animals and stuffed animals than would men, was supported. Attachment to companion animals and attachment to stuffed animals were positively related. Results are discussed within a framework of attachment and transitional objects as potential aids to therapy in people who were neglected in childhood.     

Companion Animal Attachment and Military Transfer

Abstract

Human attachment levels to companion animals were compared to whether a companion animal accompanied a military family at transfer time. Attachment levels were measured by combining preexisting subscale instruments to form a 21-item pet attachment scale. Data were collected through a mail survey (67% response rate) of registered pet owners who were to transfer within six months from 13 military installations. Attachment levels to companion animals were positively associated with taking the pet upon transferring (X²=11.44, p <.01).

A semantic differential scale was employed to measure “perceived” attachment levels, which were compared with the attachment levels from the combined subscale instrument. These two scales had a strong association with each other (X²=65.70, p<.001). Factor analysis of the combined subscale instrument yielded two factors, “pet companionship” and “pet affection,” and reliability analysis estimated Cronbach's Alpha of .95.     

The State of Research on Human–Animal Relations: Implications for Human Health

ABSTRACT

Since the late 1970s, scientific evidence has accumulated showing that pet ownership can have positive effects on people’s physical and mental wellbeing. This paper reviews the current state of affairs regarding the relationship between companion animals and human health, focusing on both the physical and psychological health outcomes related to human–animal interactions. Although designed to set the general scene on the link between animals and human wellbeing, research specific to older adults is highlighted where relevant. A particular emphasis is placed on disorders prevalent in modern-day society, notably cardiovascular disease and depression. The possible mechanisms by which companion animals might be able to enhance human wellbeing and quality of life are discussed, focusing on routes including, amongst others, the provision of companionship, social lubrication, and improvements to physical fitness. The role of the social bonding hormone, oxytocin, in facilitating attachment to our pets and the implications for human health is also discussed. Inconsistencies in the literature and methodological limitations are highlighted throughout. It is concluded that future human–animal interaction experiments should aim to account for the confounding variables that are inherent in studies of this nature.     

Parental attachment,drug use,and facultative sexual strategies

Abstract

It is often asserted that sexual promiscuity and drug abuse appears to share a common etiology in poor parental attachment. This study explores this claim empirically among 480 college students. Other variables—religiosity, masculinity/femininity, sex, age, and physical appearance—that may enhance or reduce the incidence of promiscuity and drug use were included in multivariate analyses. Parental attachment was significantly related to both variables, and the combination of poor parental attachment and drug use was a strong predictor of promiscuity for both males and females. In multivariate analyses, religiosity was the most important predictor of promiscuity for males, and attachment was the most important for females. The findings are examined guided by the three desiderata commonly accepted as relevant to biosocial attachment theory.     

Psychometric Evaluation of the Lexington Attachment to Pets Scale (Laps)

Abstract

This paper reports on the development and psychometric evaluation of a scale for assessing emotional attachment of individuals to their pets. Previous attachment scales have suffered variously from low internal consistency and reliance on small or nonrepresentative samples for their development. Telephone interviews of a random, representative sample of 412 pet owners in Fayette County, Kentucky, were completed in September 1990; a 69.5 percent response rate was achieved. From a preliminary set of 42 questions, a final 23-question instrument, the Lexington Attachment to Pets Scale (LAPS), was developed, having excellent psychometric properties. The scale is suitable for use with dog and cat owners. Data on internal consistency, factor structure, and item response theory (IRT) modeling are presented, along with correlations between the LAPS and several domains of variables known to relate to pet attachment.     

Children with Avoidant or Disorganized Attachment Relate Differently to a Dog and to Humans During a Socially Stressful Situation

ABSTRACT

Human attachment representations are shaped in interaction with the primary caregiver and are generally transferred to further bonding/ social partners later in life. According to previous evidence, primary attachment representations acquired with humans do not seem to be transferred to companion animals. This was held as a major factor why such animals would effectively provide social support also to persons with insecure attachment. The aim of this study in 19 male children, 7–11 years of age and with insecure-avoidant or disorganized attachment, was to investigate differences in their social behavior and in physiological responses when socially supported by an unfamiliar therapy dog in a socially stressful situation. The Trier Social Stress Test for Children (TSST-C) was conducted to elicit stress in the children when in the presence of the dog and a female human investigator. We found that boys with disorganized attachment (n=11) communicated more intensely than avoidantly attached boys (n=8) with both the dog and humans present. Boys with a disorganized attachment had more physical contact with the dog during the TSST-C and talked more to the dog during and after the TSST-C than did boys with an insecure-avoidant attachment. While the prevailing wisdom holds that attachment representations acquired with the primary human caregiver would not transfer to companion animals, our data indicate otherwise. At least components of attachment-related interaction styles, such as degree of contact seeking in verbal and tactile interactions are also displayed in interaction with animal partners.     

Mate guarding in the Linnet Carduelis cannabina

Capsule?House Sparrow (Passer domesticus) populations in south Swedish farmland are not affected by supplemental winter feeding, irrespective of agricultural landscape type or presence of animal husbandry, although winter populations declined more in mixed farmland and when farms contained animal husbandry.

Aims?To investigate whether food limitation of House Sparrow population size during the winter varied spatially in relation to agricultural landscape intensification and farm management.

Methods?We experimentally increased the winter food supply for populations on farmsteads in replicated landscapes that differed in agricultural intensification (open plains versus mixed farming) and/or farm management (crop farming versus animal husbandry), and estimated possible differences in effects on winter population change.

Results?We found no effect of supplementary winter feeding on changes in House Sparrow population sizes over the winter, irrespective of agricultural landscape type or presence of animal husbandry at the farm. However, we found a significantly larger winter population decline in mixed farmland and when farms contained animal husbandry.

Conclusions?The results suggest that House Sparrow populations in south Swedish farmland are not primarily limited by winter food availability. Alternatively, supplemental winter feeding may augment interspecific competition or attracts predators, offsetting any positive effect on population change. However, the stronger population decline in landscapes in which more breeding resources may be available (animal husbandry farms, mixed farmland), suggests stronger intraspecific competition during the winter in line with the resource separation hypothesis.     

Realistic Representations of Companion Animals in Comic Art in the USA

ABSTRACT

Comic art reflecting cultural and social values serves as social commentary. Cartoons and comics in the USA portraying dimensions of the human-companion animal bond, were examined to determine the realistic representational images depicting human-companion animal interaction. Content analysis resulted in three major categories reflecting realistic or quasi-realistic dimensions of our interaction with companion animals: endearing, obligatory/necessary, and nuisance/stressful. These three categories, with examples of cartoons, are discussed and placed within a theoretical context.     

Commodity aspirations in easterlin's relative income theory of fertility

Abstract

This paper presents the preference ordering that underlies Easterlin's relative income theory of fertility. Commodity aspirations are a key component of the theory and the paper explores how the introduction of commodity aspirations into the utility function affects the consumption of commodities and bearing of children. The formation and empirical specification of commodity aspirations are also discussed.     

Quality of Attachment to Companion Animals among U.S. Adults 21 to 64 Years of Age

Abstract

Previous reports of scales and indices used in studying attachment to companion animals have not included representative samples of the United States population or have failed to show good psychometric properties. This report includes psychometric analyses of a companionanimal attachment scale used among a national probability sample of United States adults aged 21 to 64 years. Internal structures of the scale were shown to be good with all eight items loading strongly on one factor. Cronbach's alpha was 0.75 with all eight items included. As expected, those individuals who had sole responsibility for the care of the companion animal had stronger attachment scores, as did individuals who had never been married. Type of pet was not significantly associated with attachment scores, which indicates that this scale may be useful for all companion animals, not solely for dogs and cats. However, further work including a larger sample of bird and fish owners needs to be done before the value of this attachment scale in that population of owners is clearly established.     

Rigenerazione e totipotenza

Abstract

Regeneration and totipotency.—Regeneration and totipotency of cells and nuclei in plants and animals are discussed. The paper consists of the following sections: regeneration in coelenterates and planarians; limb regeneration in amphibians; regeneration of mammalian liver; Wolffian lens regeneration in urodeles; nuclear transplantation in animal eggs; regeneration of plants from single cells (in vivo; in vitro; from somatic cell hybrids); general remarks.     

A model for attachment of aquatic mosses

Abstract

Detached fragments of the aquatic mosses Fontinalis duriaei and Hygroamblystegium fluviatile can attach to rocks and tree branches. A period of at least 9 weeks in association with a new rock substrate is required for attachment to occur, under the conditions of the experiment. Following the initiation of attachment there is a great increase in attachment activity resulting in a network of rhizoids; this quickly diminishes after 12–13 weeks. The overall behavior closely parallels the hyperbolic behavior pattern of several species colonizing an artificial new island (Schoener, 1974) and the curve shape appears to be a universal one where the attachment rate can be expressed as

Y = Y _max - ae^{b(t ? w)}

where the rate of attachment (b) averages somewhere near ?.5, but is influenced by other variables, including substrate type; a is the fraction of moss which will attach between the end of week wand the time of maximum attachment; t is week number; and w is the week of first attachment.     

Caratteristiche della fosfo-gluco-isomerasi di una pianta superiore

Abstract

PHOSPHOGLUCOISOMERASE FROM PEA COTYLEDONS. — 6-P-glucose iso-merase has been purified from pea cotyledons. A 70-fold purification has been obtained by means of acetone fractionation and two absorption-elution steps on calcium phosphate gel. The partially purified enzyme is free of interfering activities.

KM values of 2.5×10^?4 and 10^?4 been measured for glucose-6-P and fructose-6-P respectively. reaction, measured at pH 7.8 and 30° C., is 3.7 (Gl-6-PIFr-6-P).

The enzyme is not inhibited by p-chloro-mercurybenzoate up to 10^?3 M. Besides the substances already known to inhibit competitively the isomerase from animal tissues, the pea enzyme has been found to be competitively inhibited by ribose-5-P and by triosespho-sphates, the K₁, being respectively 7×10^?4 and 2.5×10^?4.

The properties of the pea enzyme are compared to those of animal tissues isomerase. The possible physiological significance of these properties is discussed.     

Bacteriophage λ int Protein May Recognize Structural Features of the Attachment Sites

Abstract

The bacteriophage λ int protein binds to and promotes polynucleotide strand exchange within specific DNA segments called attachment sites. Previous work strongly suggests that the specificity of int protein action is based, at least in part, on its ability to recognize nucleotide sequences in the attachment sites. We suggest that int protein also recognizes structural features of the attachment sites such as the twist and roll angles between adjacent base pairs. This proposal is based on statistical analysis of the predicted twist and roll angles of a large collection of secondary attachment sites. The analysis shows that the oscillation patterns of these parameters are conserved in regions where int proteins binds.     

Conditioning film formation and its influence on the initial adhesion and biofilm formation by a cyanobacterium on photobioreactor materials

Abstract

Although cyanobacteria are a common group of microorganisms well-suited to utilization in photobioreactors (PBRs), studies of cyanobacteria fouling and its prevention are scarce. Using a cyanobacterium, Anabaena sp. PCC 7120, which had been genetically modified to enhance linalool production, the formation of conditioning films and the effects of these on the physico-chemical surface properties of various PBR materials during initial adhesion and biofilm formation were investigated. The adhesion assay revealed that the overall attachment of Anabaena was substratum dependent and no correlation between the hydrophobicity/roughness of clean material and cell attachment was found. Surface hydrophilicity/hydrophobicity of all the materials changed within 12?h due to formation of conditioning films. ATR-FTIR spectroscopy revealed that the fractional change in protein deposition between 12 to 96?h was consistent with Anabaena cell attachment but polysaccharide deposition was material specific and did not correlate with cell attachment on the PBR materials. Also, the delay in conditioning film proteins on PVC and PTFE indicated that components other than proteins may be responsible for the decrease in contact angles on these surfaces within 12?h. This indicates the important role of the chemical nature of adsorbed conditioning films in determining the initial attachment of Anabaena to PBR materials. The lower rate of attachment of Anabaena on the hydrophilic surfaces (glass and PMMA) between 72?h to 96?h (regime 3) showed that these surfaces could potentially have low fouling characteristics at extended time scales and should be considered for further research.