Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Number of siblings can affect adult personality

01.02.2008
Scientists at the Universitat Autònoma de Barcelona Institute of Neuroscience have observed in experiments with rats that those born into larger litters display less anxious behaviour in adulthood, respond better to adverse situations and are more willing to explore new surroundings. The results, which could also be extrapolated to human behaviour, have been published in the journal Physiology and Behavior.

Researchers assessed the behaviour of rats born with different numbers of siblings, a variable that has rarely been taken into account until now. The group contained rats from litters with less than ten pups, litters with ten to fifteen pups and litters with more than fifteen pups.

The mother's behaviour towards her pups was also studied to discover whether this influenced any emotional changes appearing in their adult life. The results of this experiment demonstrated that rats born from larger litters display less anxiety in adulthood, are more willing to explore new surroundings and react better to adverse or stressful situations when compared to the ones born and raised in smaller litters.

Previous studies revealed that rats receiving more maternal affection and attention present less anxiety when they are adults. In this sense, the present research demonstrates that in addition to the mother's care, relationships between siblings also have a significant impact on how rats behave later on in life.

According to the authors of the research, “The first years of life are very important for the development of our nervous system and for how we behave when we are adults”. Although the research was carried out with an animal model, “it is a very useful model in studying the effect early life experiences have on adult behaviour”.

The study, directed by Universitat Autònoma de Barcelona Institute of Neuroscience researchers Roser Nadal and Rosa Maria Escorihuela, was published in the journal Physiology & Behavior.

Octavi López Coronado | alfa
Further information:
http://www.uab.es

More articles from Social Sciences:

nachricht Internet use in class tied to lower test scores
16.12.2016 | Michigan State University

nachricht Geographers provide new insight into commuter megaregions of the US
01.12.2016 | Dartmouth College

All articles from Social Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

Im Focus: How to inflate a hardened concrete shell with a weight of 80 t

At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).

Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...

Im Focus: Bacterial Pac Man molecule snaps at sugar

Many pathogens use certain sugar compounds from their host to help conceal themselves against the immune system. Scientists at the University of Bonn have now, in cooperation with researchers at the University of York in the United Kingdom, analyzed the dynamics of a bacterial molecule that is involved in this process. They demonstrate that the protein grabs onto the sugar molecule with a Pac Man-like chewing motion and holds it until it can be used. Their results could help design therapeutics that could make the protein poorer at grabbing and holding and hence compromise the pathogen in the host. The study has now been published in “Biophysical Journal”.

The cells of the mouth, nose and intestinal mucosa produce large quantities of a chemical called sialic acid. Many bacteria possess a special transport system...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

Nothing will happen without batteries making it happen!

05.01.2017 | Event News

 
Latest News

Water - as the underlying driver of the Earth’s carbon cycle

17.01.2017 | Earth Sciences

Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

17.01.2017 | Materials Sciences

Smart homes will “LISTEN” to your voice

17.01.2017 | Architecture and Construction

VideoLinks
B2B-VideoLinks
More VideoLinks >>>