25 research outputs found
Infantile trauma: representations of self, others and relationships and problematic behaviours in maltreated children.
Literature suggests that different types of early traumatic experiences (such as child maltreatment) have an impact on children’s psychological well-being, especially, in terms of understanding and expectations of relationships, representations of self and others and on their emotion regulation. This can influence their attachment pattern and their emotional and behavioural development. Narrative tasks, such as the Story Stem Assessment Profile, offer the children an opportunity to express their expectations about themselves, others and relationships, especially attachment relationships (Hodges & Steele, 2000; Hodges, Steele, Kaniuk, Hillman & Asquith, 2009). An area of research that needs further study is the investigation of the link, in traumatised children, between children representations and their symptomatology. The present exploratory research investigates the connection between early traumatic experiences of maltreatment, children's representations of self, others and relationships and psychological well-being in terms of behavioural problems and stress. 25 maltreated and 25 non-maltreated children, aged 4 to 8 years old, participated in this research. The measures used were the Story Stem Assessment Profile to investigate child's representations of self, others and relationships (Hodges et al., 2013), the Child Behavior Checklist to identify behavioural problems in the child (Achenbach & Rescorla, 2000) and the Parent Stress Index to evaluate the magnitude of stress in the parent–child system, as seen by the mother (Abidin,1990). Preliminary data suggest that traumatised children showed more behavioural and post-traumatic symptoms. Moreover, they represented the world as a dangerous place where adults are dangerous or unaware, protection is lacking and extreme violence often occurs
Cold gas accretion in galaxies
Evidence for the accretion of cold gas in galaxies has been rapidly
accumulating in the past years. HI observations of galaxies and their
environment have brought to light new facts and phenomena which are evidence of
ongoing or recent accretion:
1) A large number of galaxies are accompanied by gas-rich dwarfs or are
surrounded by HI cloud complexes, tails and filaments. It may be regarded as
direct evidence of cold gas accretion in the local universe. It is probably the
same kind of phenomenon of material infall as the stellar streams observed in
the halos of our galaxy and M31. 2) Considerable amounts of extra-planar HI
have been found in nearby spiral galaxies. While a large fraction of this gas
is produced by galactic fountains, it is likely that a part of it is of
extragalactic origin. 3) Spirals are known to have extended and warped outer
layers of HI. It is not clear how these have formed, and how and for how long
the warps can be sustained. Gas infall has been proposed as the origin. 4) The
majority of galactic disks are lopsided in their morphology as well as in their
kinematics. Also here recent accretion has been advocated as a possible cause.
In our view, accretion takes place both through the arrival and merging of
gas-rich satellites and through gas infall from the intergalactic medium (IGM).
The infall may have observable effects on the disk such as bursts of star
formation and lopsidedness. We infer a mean ``visible'' accretion rate of cold
gas in galaxies of at least 0.2 Msol/yr. In order to reach the accretion rates
needed to sustain the observed star formation (~1 Msol/yr), additional infall
of large amounts of gas from the IGM seems to be required.Comment: To appear in Astronomy & Astrophysics Reviews. 34 pages.
Full-resolution version available at
http://www.astron.nl/~oosterlo/accretionRevie