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PubMed2005

Maternal reflective functioning, mother-infant affective communication, and infant attachment: exploring the link between mental states and observed caregiving behavior in the intergenerational transmission of attachment.

This study examines the link between mental representations and maternal behavior within the intergenerational transmission of attachment. Maternal reflective functioning was hypothesized to predict the quality of mother-infant affective communication based on the AMBIANCE measure. Each of these measures was also considered as a predictor of the quality of infant attachment. The subjects were 45 mothers and their 10-14-month-old infants. Results supported each of the study's major hypotheses. The AMBIANCE measure and the reflective functioning measure had a strong negative correlation. Thus, the level of disruption in mother-infant affective communication was inversely related to the level of maternal reflective functioning. The AMBIANCE measure was also shown to be a very good predictor of infant attachment. Mothers with high AMBIANCE scores were more likely to have infants classified as disorganized or resistant, whereas mothers with low AMBIANCE scores were more likely to have infants classified as secure. A linear regression analysis indicated that maternal behavior mediates the impact of maternal reflective functioning upon infant attachment. Implications for attachment theory and early intervention are explored.

Adult↗
PubMed2005

Attachment and adolescent depression: the impact of early attachment experiences.

Bowlby's (1969/1982) ideas of attachment as an interactional system provide the basis for an understanding of the development of adaptive and maladaptive working models of the self and other. More specifically, attachment theory can offer an in-depth understanding into the development of a depressotypic self-schema. Attachment theory is set alongside research into adolescent depression in order to illustrate the importance of the primary attachment relationship in protecting adolescents in our society from developing depressive symptomatology. Therefore, current research in adolescent depression is viewed through the lens of attachment theory. This view is complemented by an exploration of the role of culture in the production of gender differences in depression. Thus, a tripartite model of adolescent depression, including the individual, family relationships, and socio-cultural factors is offered as being of potential value for clinicians and researchers in this area.

Adolescent↗
PubMed2006

Narrative assessment of attachment representations: links between secure base scripts and adolescent attachment.

We explored the notion that adolescents possess mental secure base scripts of attachment-related events and examined, for the first time, whether these scripts were linked to adolescent attachment security. Results indicated that adolescents possessed a general script for mother and for father, and that they drew upon these scripts across different contexts. Adolescents' scripts for mother and for father were related, but only the scripts for mother predicted unique variance in adolescents' scripts for nonspecific others. Moreover, greater attachment security (as measured by the Adult Attachment Interview; AAI) was linked to greater access to and knowledge of secure base scripts for mothers, fathers, and nonspecific others. Only mother scripts, however, predicted unique variance in adolescents' AAI coherence of mind scores. Adolescents' romantic-attachment avoidance and anxiety scores (as assessed using the Experiences in Close Relationship Inventory) were linked negatively to scripts for mothers and nonspecific others, respectively.

Adolescent↗
PubMed2006

The role of adult attachment security in non-romantic, non-attachment-related first interactions between same-sex strangers.

Research using the Adult Attachment Interview has largely examined its predictive significance for interpersonal behavior within the context of observations of parent-child and romantic relationships. A limitation of this state of affairs is that the literature does not make clear whether or when attachment-related variation becomes reflected in other kinds of interpersonal encounters. This study demonstrates that links between adults' states of mind regarding childhood attachment experiences and the quality of their interpersonal interactions are evident in first meetings between same-sex strangers in a non-attachment-related context. More specifically, in a study of 50 stranger dyads (50% female), secure adults demonstrated positive emotional engagement during a challenging puzzle-building task. In contrast, preoccupied adults dominated the task, whereas dismissing adults evidenced negative emotion during the interaction. Results held controlling for the Big Five personality dimensions and suggest a middle ground position regarding the narrow versus broad correlates of adult attachment security.

Adaptation, Psychological↗
PubMed1989

Attachment behavior, attachment security, and temperament during infancy.

In summary reviews and empirical research, investigators have suggested that attachment classifications derived from the Ainsworth Strange Situation may reflect variations along dimensions of temperament as well as, or perhaps instead of, individual differences with respect to infant-mother attachments. In this study, relations between temperament dimensions from the Infant Temperament Questionnaire (Revised) and Strange Situation behaviors were evaluated. Relations between the behavioral style scores and the categories of attachment quality were also tested. The hypothesis that temperamental difficulty would be related to negative emotionality, as indexed by infant distress during separation (but not during the reunions), was tested and supported. Neither the behavioral style dimensions nor the temperamental diagnoses (e.g., "easy" vs. "difficult") were associated significantly with attachment classifications. The results are consistent with previous findings that temperament measures do not predict attachment security. Nevertheless, certain behaviors indexing negative emotionality that may be observed in the context of the Strange Situation are related to temperamental variability.

Adaptation, Psychological↗
PubMed2006

Personality disorders and romantic adult attachment: a comparison of secure and insecure attached child molesters.

This study analyzed personality disorders in a group of 33 securely and 51 insecurely attached child molesters. A total of 51 child molesters were selected from a community based educational training program, and the other group was selected from a Belgian prison (n = 33). Research shows that adult attachment styles and personality disorders share a common underlying structure. It is remarkable that very little is known about differences between securely and insecurely attached child molesters. In this study, the authors found that the schizoid personality disorder differed between securely and insecurely attached child molesters. These findings have implications for the aetiology and treatment of child molesters. Future research is necessary to determine patterns of attachment in relationship to personality disorders.

Adult↗
PubMed2000

Two influenza A virus-specific Fabs neutralize by inhibiting virus attachment to target cells, while neutralization by their IgGs is complex and occurs simultaneously through fusion inhibition and attachment inhibition.

Mabs H36 (IgG2a) and H37 (IgG3) recognize epitopes in antigenic sites Sb and Ca2, respectively, in the HA1 subunit of influenza virus A/PR/8/34 (H1N1). Their neutralization was complex. Our aim here was to investigate the mechanism of neutralization by the IgGs and their Fabs. In MDCK and BHK cells, both IgGs neutralized primarily by inhibiting virus-cell fusion, although at higher IgG concentrations virus attachment to target cells was also inhibited. In contrast, the Fabs neutralized entirely by inhibiting virus attachment, although a higher concentration of Fab than IgG was required to bring this about. Both H36 and H37 exerted a concentration-dependent spectrum of neutralization activity, with virus-cell fusion inhibition and virus-cell attachment inhibition being the predominant mechanisms at low- and high-antibody concentration, respectively, and both mechanisms occurring simultaneously at intermediate concentrations. However, it may be that attachment inhibition was a secondary event, occurring to virus that had already been neutralized through inhibition of its fusion activity. Neutralization by H36 and H37 Fabs was a simple process. Both inhibited virus attachment but required much higher (>100-fold) molar concentrations for activity than did IgG. The functional affinities of the IgGs were high (0.4-0.6 nM) and differences between these and the affinity of their Fabs (H36, nil; H37, 23-fold) were not sufficient to explain the differences observed in neutralization. Similar neutralization data were obtained in two different cell lines. The dose-response curve for neutralization by H36 F(ab')(2) resembled that for IgG, although eightfold more F(ab')(2) was required for 50% neutralization. Overall, neutralization mechanisms of H36 and H37 antibodies were similar, and thus independent of antigenic site, antibody isotype, and target cell.

Animals↗
PubMed1988

Prediction of substrate removal rates of attached microorganisms and of relative contributions of attached and suspended communities at field sites.

A mathematical model composed of a direct proportionality relationship between bulk water velocities and field-determined second-order microbial transformation rate coefficients, and the relative rate coefficient of a benchmark chemical, was developed for estimating the substrate removal rates of rapidly degraded chemicals by attached organisms in shallow (<1 m deep) aquatic ecosystems. Data from 31 field experiments involving the addition of 2,4-dichlorophenoxyacetic acid methyl ester (2,4-DME) in nine field areas were used to determine a field-derived second-order rate coefficient for microbial transformation of the ester. By using 2,4-DME as a benchmark chemical, the model was used to predict microbial transformation rates of the butoxyethyl ester of 2,4-dichlorophenoxyacetic acid (2,4-DBE) at five other field sites. The predicted half-lives of 2,4-DBE varied 1,500-fold and were within about a threefold range or less of the measured half-lives. Under conditions of mass transport limitation, the contributions of attached microorganisms relative to total microbial activities at various field sites were related to the ratio of water velocity, U, and depth, D, showing that historical definitions of ecosystems according to flow and depth characteristics are also valid for describing the process-related structure of ecosystems. An equation was developed for predicting the relative contributions of attached and suspended communities with values of U and D for lotic and lentic ecosystems. On the basis of this equation, attached microorganisms were expected to be insignificant in deep lentic ecosystems and suspended microorganisms were expected to be insignificant in shallow lotic systems for the same process carried out by both populations. Neglecting epiphytic microorganisms, both suspended and attached organisms were expected to be significant in wetlands.

Journal Article↗
PubMed1990

Improved method of enumeration of attached bacteria for study of fluctuation in the abundance of attached and free-living bacteria in response to diel variation in seawater turbidity.

Sample preparation for enumerating attached bacteria in turbid seawater by epifluorescence microscopy was improved by treating samples with a surfactant (Tween 80) followed by sonication. With optimal treatment with Tween 80 (final concentration, 10 ppm [10 mug/ml]) and sonication, as many as 10 times more attached bacteria were enumerated from turbid seawater relative to the number enumerated from an untreated control. Dispersion of bacteria by sonication alone resulted in the enumeration of only 42 to 72% of the attached bacteria. By this technique, fluctuations in the number of attached and free-living bacteria were determined in water from Aransas Pass, Tex., where surface sediments are resuspended on a regular basis by tidal currents. The abundance of attached bacteria increased in proportion to the seawater turbidity that resulted from sediment resuspension. The variation in abundance of free-living bacteria was not directly related to seawater turbidity. However, the magnitude of fluctuation in the abundance of free-living bacteria was related to the extent of turbidity variation during diurnal tides.

Journal Article↗
PubMed1971

Attachment of flagellar basal bodies to the cell envelope: specific attachment to the outer, lipopolysaccharide membrane and the cyoplasmic membrane.

A procedure is described for the purification of the Escherichia coli outer membrane (lipopolysaccharide or L membrane) with flagella still attached. The resulting lipopolysaccharide membrane was in the form of vesicles that had a trilaminar structure in thin section and contained about 55% lipopolysaccharide and 45% protein. T2 or T4 phage preadsorbed to E. coli were found attached to the purified lipopolysaccharide membrane. Flagella were bound to the purified lipopolysaccharide membrane specifically at the basal body ring closest to the hook (the L ring). The cytoplasmic membrane in preparations from osmotically lysed E. coli spheroplasts or Bacillus subtilis protoplasts was specifically attached to flagella at the basal body ring farthest from the hook (the M ring). In the E. coli preparation, lipopolysaccharide membrane was also present and was attached to the L ring. From these data and a knowledge of the structure and dimensions of the E. coli flagellar basal body and cell envelope, a model for flagellar attachment is deduced.

Adenosine Triphosphatases↗
PubMed1981

Attachment of mycoplasmas to erythrocytes: a model to study mycoplasma attachment to the epithelium of the host respiratory tract.

Mycoplasma pneumoniae, M. gallisepticum and M. pulmonis are pathogens of the respiratory tract. Their adherence to the host tissue is a prerequisite for manifestation of the disease. The attachment occurs between membrane components of the mycoplasmas and the host cells. In the attachment of M. pneumoniae and M. gallisepticum, binding sites of a protein nature of the mycoplasma membranes interact primarily with sialic acid residues of sialoglycoproteins of the host cell membranes. The latter was clearly indicated in studies on the pathogenic strain of M. pneumoniae and its nonpathogenic nonhemadsorbing mutants, and by the assessment of the direct binding of glycophorin [the major sialoglycoprotein of human red blood cells (RBC)] and other sialoglycoproteins to M. pneumoniae and M. gallisepticum. The components involved in the interaction of M. pulmonis with the host cells are not as well characterized, since the attachment is not affected by proteolytic treatment of the mycoplasmas, nor by removal of sialic acid residues from the host cell membranes. The attachment of the mycoplasmas to the host cells also occurs with nonviable organisms and can, in addition, by reproduced by isolated membranes. The binding sites of M. pneumoniae and M. gallisepticum were partially purified by affinity chromatography, using the high affinity of the binding sites for glycophorin. By this procedure the membranes were solubilized with detergents and chromatographed through glycophorin attached to Sepharose 4B as an affinity matrix. The binding sites retained the high affinity for glycophorin and bound to RBC membranes. Are the binding sites distributed throughout the membrane? Since the binding of the mycoplasma is via a polar structure (the tip or bleb), one may suggest that these structures harbor them. Experimental evidence for their distribution is being sought.

Adhesiveness↗
PubMed1998

Maternal attachment representations, maternal sensitivity, and the infant-mother attachment relationship.

The role of maternal sensitivity as a mediator accounting for the robust association between maternal attachment representations and the quality of the infant-mother attachment relationship was examined. Sixty mother-infant dyads were observed at home and in the Strange Situation at 13 months, and mothers participated in the Adult Attachment Interview (AAI) within the next 6 months. A strong association was found between AAI and Strange Situation classifications, and autonomous mothers were more sensitive at home than were nonautonomous mothers. Mothers in secure relationships were more sensitive at home than mothers in nonsecure relationships. Likewise, infants in secure relationships were more secure as assessed by the Waters' Attachment Q sort than infants in nonsecure relationships. A test of the mediational model revealed that maternal sensitivity accounted for 17% of the relation between AAI and Strange Situation classifications.

Adult↗
PubMed1996

Introduction to the special section on attachment and psychopathology: 2. Overview of the field of attachment.

J. Bowlby (1969) proposed that the child's insistence on maintainance of proximity to protective (parental) figures was attributable to the activities of an attachment behavioral system which regulates primate safety and survival. M. D. S. Ainsworth, M. C. Blehar, E. Waters, and S. Wall's (1978) Strange Situation procedure later delineated 3 categories of 1-year-old response to brief laboratory separations from the parent (secure, avoidant, and resistant), each found systematically related to parent-infant interaction, and predictive of favorable versus unfavorable sequelae in middle childhood. Recently, a fourth, disorganized-disoriented infant Strange Situation category has been identified, and infant attachment has been found to predict child narratives. Additionally, an Adult Attachment Interview (AAI) and corresponding system of discourse analysis has been devised that assesses variations in the ability to maintain coherent, collaborative discourse while discussing early relationships and their influences. Among parents, differences in patterning of AAI response predict corresponding forms of infant Strange Situation behavior, both concurrently and before the birth of the first child. Parents who are coherent-collaborative in discussing even highly unfavorable histories have infants who are secure. A strong majority of clinically distressed individuals are insecure with respect to attachment, and special vulnerabilities are appearing in disorganized-disoriented children. Relations to behavior genetics, family interaction patterns, psychophysiology, and treatment outcome studies are emerging or are anticipated.

Adolescent↗
PubMed2004

Correlates of attachment at age 3: construct validity of the preschool attachment classification system.

This study examined correlates of attachment at age 3 to further validate preschool separation-reunion measures. Three-year-olds (N = 150) and their mothers participated in a separation-reunion protocol, the Preschool Attachment Classification System (PACS: J. Cassidy & R. S. Marvin with the MacArthur Working Group on Attachment, 1992), and a mother-child interaction session during a laboratory visit. Mothers also completed psychosocial measures and, along with teachers, evaluated child behavior problems. The secure and disorganized groups received, respectively, the highest and lowest interaction scores. Disorganized children showed a higher level of teacher-reported externalizing and internalizing problems than did secure children. Mothers of insecure children reported higher child externalizing (all insecure groups) and internalizing (avoidant group) scores, more personal distress related to emotional bonding (disorganized group), childrearing control (ambivalent group), and child hyperactivity (avoidant group). Results strongly support the validity of the PACS as a measure of attachment in 3-year-olds.

Child Behavior Disorders↗
PubMed2003

Attachment theory and group processes: the association between attachment style and group-related representations, goals, memories, and functioning.

Four studies examined attachment-style differences in group-related cognitions and behaviors. In Studies 1-2, participants completed scales on group-related cognitions and emotions. In Studies 3-4, participants were divided into small groups, and their performance in group tasks as well as the cohesion of their group were assessed. Both attachment anxiety and avoidance in close relationships were associated with negative group-related cognitions and emotions. Anxiety was also related to the pursuit of closeness goals and impaired instrumental performance in group tasks. Avoidance was related to the pursuit of distance goals and deficits in socioemotional and instrumental performance. Group cohesion significantly moderated the effects of attachment anxiety. The discussion emphasizes the relevance of attachment theory within group contexts.

Adult↗
PubMed1999

Assessing children's representational attachment models: links to mother-child attachment quality in infancy and childhood.

The authors examined whether the finding of a correspondence between specific behavioral patterns of attachment in infancy and childhood and specific representational patterns in childhood could be replicated using children's responses to a story depicting an imagined parent-child separation experience. The participants were 33 German mothers and their children (16 girls, 17 boys). Attachment quality was assessed via standard and exploratory attachment observations at ages 12 months, 18 months, and 6 years. Chi-square analyses indicated that there was a good level of concordance between the behavioral and representation attachment patterns in infancy and childhood.

Anxiety, Separation↗
PubMed2000

A new method of evaluating attachment representations in young school-age children: the Manchester Child Attachment Story Task.

We describe a new instrument, using a doll-play vignette completion method, which applies concepts and methodologies from infant and adult attachment research to enable identification and detailed classification of internal representations of attachment relationships in young school-age children. Validation of the Manchester Child Attachment Story Task (MCAST) in a normal population (N = 53) shows good interrater reliability and content validity. Patterns of attachment representation identified show stability over time. Comparisons are made with existing methodologies, and potential applications of the instrument and directions for future research are discussed.

Child↗
PubMed2006

Effects of attachment-focused versus relationship skills-focused group interventions for college students with insecure attachment patterns.

This study tested the attachment issues segment of Kilmann's (1996) manualized attachment-focused (AF) group intervention. College students with insecure adult attachment patterns were randomly assigned into either a manualized attachment-focused group or into a manualized relationship skills-focused (RS) group. A no-intervention control condition (NC) was recruited in the same manner. Between pre- and post-testing, AF and RS participants reported decreased agreement with dysfunctional relationship beliefs. AF participants also reported higher self-esteem, decreased angry reaction, and increased control of anger. RS participants reported improved interpersonal styles. At the 15-18-month follow-up, AF and RS participants reported increased self-awareness and positive relationship expectations and experiences, while NC participants reported no positive changes.

Adult↗