21. |
- Persson, Bertil
(författare)
-
A Study of Personality and Family- and School Environment and Possible Interactional Effects in 244 Swedish Children—A Multiple Regression Analysis
- 2014
-
Ingår i: Psychology. - : Scientific Research Publishing, Inc.. - 2152-7180 .- 2152-7199. ; 5, s. 886-895
-
Tidskriftsartikel (refereegranskat)abstract
- The aim of the study was to examine relationships between psychosocial family- and school environment and personality as assessed by the Junior Eysenck Personality Questionnaire (EPQ-J) and possible personality interactional effects. The study was based on 244 Swedish girls and boys, 10-19 years old, who filled in the Family- and School Psychosocial Environment (FSPE) questionnaire and the EPQ-J. A multiple regression analysis showed that the FSPE-factor Family conflicts and school discipline predicts Psychoticism (antisocial personality), and that the FSPE-factor Warmth, support and openness from parents, siblings and peers predict Extraversion. Sex, Psychoticism and the size of sibling group predicted Neuroticism. Spanking was reported in various degrees by 8.1 percent of the children, and this factor was related to Psychoticism. These results support socialization theories. The most unexpected finding was the impact of interactions between personality variables themselves, influencing the FSPE’s predictability of Neuroticism. Discussion about the advantage of the use of statistic control in a multiple regression, possible causal links between psychosocial environment and personality, limitations and further research propositions concludes the article.
|
|
22. |
|
|
23. |
|
|
24. |
|
|
25. |
- Persson, Bertil, et al.
(författare)
-
Basic creep of high-strength concrete at early ages
- 1993
-
Ingår i: Creep and shrinkage of concrete : proceedings of the fifth International RILEM Symposium / RILEM proceedings 22. - 0419186301 ; , s. 523-528
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)
|
|
26. |
- Persson, Bertil
(författare)
-
Basic Deformations of High-Performance Concrete at Early Ages.
- 1997
-
Ingår i: Nordic Concrete Research. - 0800-6377. ; 20, s. 59-74
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Creep and shrinkage are two major problems to be discussed in concrete design. Basic creep is studied during constant loading, temperature and moisture conditions, i.e. no exchange of moisture takes place to or from the specimen during the test period. In this paper an experimental and numerical study of basic creep of High Performance Concrete (HPC) is outlined. For this purpose cylinders and cubes were cast. Quasi-instantaneous deformation and basic creep including autogenous shrinkage were observed over 3 years. Analysis's of elastic modulus, early creep and long-term creep including autogenous shrinkage are presented. HPC autogenous shrinkage had a great influence on the results. The autogenous shrinkage in its turn is caused by the self-desiccation of HPC. The study was carried out in 1992 through 1994 at Lund Institute of Technology, Division of Building Materials, Lund, Sweden.
|
|
27. |
|
|
28. |
|
|
29. |
|
|
30. |
|
|