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  1. 2 Polish Psychological Bulletin

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  1. 2 Pisula W.

  2. 1 Stryjek R.

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  1. 2 2008

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1

Play and Exploration in Animals — A Comparative Analysis

100%
Pisula W.
Polish Psychological Bulletin
|
2008
|
vol. 39
|
issue 2
104-107
EN
Exploratory behavior and play are very often discussed together. However, despite many similarities they are two distinct forms of behavior. They have different evolutionary histories and they develop in different ways. Both forms of behavior play a crucial role in the development of sophisticated and complex psyche. The paper discusses similarities and differences between exploration and play. The hypothesis of the joint development of exploration, play and animal intelligence is proposed.
2

Warsaw Wild Captive Pisula Stryjek rats (WWCPS) - Establishing a breeding colony of Norway Rat in captivity

63%
Stryjek R., Pisula W.
Polish Psychological Bulletin
|
2008
|
vol. 39
|
issue 2
66-70
EN
It is believed that the history of laboratory rat dates back to 1820-ies, which is about 300 generations. This relatively short evolutionary distance, drastically different environment and selective breeding could have caused differences in behaviour between the laboratory rat and his wild counterpart - Norway rat (Rattus norvegicus). The vast majority of research concerning differences between wild and laboratory rats was conducted over 30 years ago. The knowledge acquired as a result of that research seems far from being complete. Over a quarter of a century could have deepened the described differences. Nowadays the change in experimental approach, in favour of low stress conditions, can give a new insight into this problem. This article describes process of establishing a laboratory line of wild Norway rat, which will take part in a broad series of comparative studies. 16 wild rats were trapped in 5 distant parts of Warsaw. Most of wild rats successfully adapted to captive conditions, mating successfully and producing litters, which have survived to adolescence.
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