On Groups with Two Isomorphism Classes of Derived Subgroups

The structure of groups which have at most two isomorphism classes of derived subgroups (D-2-groups) is investigated. A complete description of D-2-groups is obtained in the case where the derived subgroup is finite: the solution leads an interesting number theoretic problem. In addition, detailed information is obtained about soluble D-2-groups, especially those with finite rank, where algebraic number fields play an important role. Also, detailed structural information about insoluble D-2-groups is found, and the locally free D-2-groups are characterized.

Attachment and Coping With Two Kinds of Relationship Stressors

This study evaluated the relationship between recalled parental treatment, attachment style, and coping with parental and romantic stressors. A group of 66 undergraduate students completed the Parental Bonding Instrument (PBI) (Parker, Tupling, & Brown, 1979), a measure of attachment style (Simpson, 1990), general questions regarding the intensity and frequency of parental and romantic stressors, and their typical ways of coping with each type (Vitaliano, Russo, Carr, Maiuro, & Becker, 1985). Data analysis showed that attachment scores were significantly correlated with coping with both kinds of stress. The most significant correlations were found between attachment and coping with romantic stressors. Overall, high or low use of a specific approach to coping was consistent in the face of parental and romantic stressors. Further, exploratory analysis revealed that the habitual intensity of the experienced stressors could act as a moderator of coping techniques.