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 Lying in a foreign language is easier
19.07.2018 | Julius-Maximilians-Universität Würzburg

nachricht Engineering cooperation
05.07.2018 | Institute of Science and Technology Austria

All articles from Social Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Future electronic components to be printed like newspapers

A new manufacturing technique uses a process similar to newspaper printing to form smoother and more flexible metals for making ultrafast electronic devices.

The low-cost process, developed by Purdue University researchers, combines tools already used in industry for manufacturing metals on a large scale, but uses...

Im Focus: First evidence on the source of extragalactic particles

For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.

To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...

Im Focus: Magnetic vortices: Two independent magnetic skyrmion phases discovered in a single material

For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.

Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...

Im Focus: Breaking the bond: To take part or not?

Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.

A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...

Im Focus: New 2D Spectroscopy Methods

Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.

"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Leading experts in Diabetes, Metabolism and Biomedical Engineering discuss Precision Medicine

13.07.2018 | Event News

Conference on Laser Polishing – LaP: Fine Tuning for Surfaces

12.07.2018 | Event News

11th European Wood-based Panel Symposium 2018: Meeting point for the wood-based materials industry

03.07.2018 | Event News

 
Latest News

Detecting damage in non-magnetic steel with the help of magnetism

23.07.2018 | Materials Sciences

Researchers move closer to completely optical artificial neural network

23.07.2018 | Information Technology

Enabling technology in cell-based therapies: Scale-up, scale-out or program in-place

23.07.2018 | Health and Medicine

VideoLinks
Science & Research
Overview of more VideoLinks >>>