Previous behavior-genetic research on personality has been alniosi exclusively based tin self-report questionnaire measures. The purpose of this research was to measure personahty constructs via self-and peer reports on tbe items of tbe NEO Five-Factor Inventory (Costa & McCrae. 1989). The sample included 660 monozygotic and 200 same sex and 104 opposite sex dizygoiic twin pairs. We collected self-and two independent peer reports for each of the twins. Our analysis of self-report data replicates earlier fmdings of a substantial genetic influence on the Big Five (/r = .42 to .56). We also found this influence for peer reports. Our results validate tindings based solely on self-reports. However, estimates of genetic contributions to phenotypic variance were substantially higher when based on peer reports (/i' = .57 to .81) or self-and peer reports (ir = .66 to .79) because these data allowed Preliminarj' analyses of the data were presented at the seventh meeting of the International ScKiety for the Study
A psychometric study has been conducted with the aim of testing the validity of the Formal Characteristics of Behaviour-Temperament Inventory (FCB-TI). FCB-TI has been constructed to measure six temperament traits according to the Regulative Theory of Temperament (RTT): Briskness, Perseverance (referring to the temporal aspect of behavior), Sensory Sensitivity, Emotional Reactivity, Endurance, and Activity (referring to the energetic characteristics of behaviour) . These traits have been compared with other temperament as well as personality dimensions. The following measures were used: PTS, EAS-TS, DOTS-R, EPQ-R, SSS-V, 16PF, and NEO-FFI. The study was conducted on samples consisting of over 1500 subjects with satisfactory balanced gender ratio (about 50 per cent), and with a broad range of age (from 15 to 77 years), representing a variety of professions and educational levels. The correlational and factor analytic findings are presented; these show high theoretical validity of the FCB-TI scales, except the Sensory Sensitivity scale. In the discussion some conclusions concerning the revision of the structure of temperament have been suggested. 1972; 1983) and in a revised form (STI-R) developed by Strelau, Angleitner, Bantelmann and Ruch (1990a; Ruch, Angleitner and Strelau, 1991) were used as the main methods by means of which the basic assumptions of the RTT were examined. However, these inventories were constructed with the purpose of measuring the
A psychometric study has been conducted with the aims of revising the structure of temperament as postulated by the Regulative Theory of Temperament ( R T T ) and of constructing an inventory which corresponds to the RTT. A starting point for the study was the assumption that temperament refers to formal attributes of behaviour expressed in energetic and temporal characteristics. About 600 items covering 12 characteristics were generated. A study based on linguistic and itemmetric analysis allowed us to reduce the number of items representing the 12 characteristics to a 381-item pool. This set of items served as the basis for distinguishing the temperamental traits and for constructing the inventory: the Formal Characteristics of Behaviour-Temperament Inventory (FCB-TI). A thorough psychometric study and factor analysis of data obtained from over 2000 subjects (both genders, aged from 15 to 80 years) allowed us to distinguish six temperamental traits which have the status of Jirst-order factors. Among them, four-Sensory Sensitivity, Endurance, Emotional Reactivity, and Activity-refer to the energetic aspect of behaviour and two-Briskness and Perseverance-refer to the temporal characteristics. The FCB-TI has satisfactory psychometric characteristics, including Cronbach alpha and stability measures. Studies have shown that the six FCB-TI scales are replica across samples and refer to robust temperament dimensions. psychometric techniques) which allow us to operationalize and to measure the basic concepts comprised by the theory.The Regulative Theory of Temperament (RTT), presented for the first time by Strelau (1974) almost two decades ago, and most systematically developed in his 1983 monograph, may serve as an example of a theory which was lacking, maybe not in operationalizations but certainly in assessment techniques. The RTT did not provide methods by means of which the basic assumptions regarding the structure of temperament and the hypothesized temperamental traits could be examinedsupported or falsified. Because the roots of the RTT can be found, among other theories, in the Pavlovian approach, the main inventory by means of which data referring to the RTT were collected was the Strelau Temperament Inventory (STI; Strelau, 1972Strelau, , 1983; see also the revised STI, by Strelau, Angleitner, Bantelmann and Ruch, 1990). However, the STI (and the STI-R as well), measuring the Pavlovian constructs of strength of excitation, strength of inhibition, and mobility of nervous processes, does not grasp all the traits postulated by the RTT. This is especially true with respect to activity as postulated by the RTT (see Strelau, 1983Strelau, , 1989 and with reference to temporal characteristics, except mobility. For assessing the temporal traits, the Temporal Traits Inventory (TTI) was developed (see Gorynska and Strelau, 1979;Strelau, 1983); however, it was rarely applied in further studies.Such a state of affairs regarding the status of the RTT has forced us to develop an inventory which corresponds fully to the the...
Polymorphisms in the serotonin transporter gene (5HTT) have been reported to be associated with neuroticism (emotionality) and with depression. A recent report of an association between 5HTT and neuroticism involved unselected samples and self-report questionnaires. We attempted to extend these findings using a selected extremes design and peer ratings. From a sample of 2085 individuals, each assessed on neuroticism by two independent peers, we selected 52 individuals from the top 5% and 54 individuals from the bottom 5%. No association was found for either a functional 44 bp insertion/deletion polymorphism in 5HTT regulatory sequence (5HTTLPR) or for a non-functional variable number tandem repeat 5HTT polymorphism.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.