The ability to use tools is one of the hallmarks of intelligence. Tool use is fundamental to human life and has been for at least the last two million years. We use tools to extend our reach, to amplify our physical strength, to transfer objects and liquids, and to achieve many other everyday tasks. A large number of animals have also been observed to use tools (Beck 1980). Some birds, for exam...

this survery investigated the secondary school students attitude regarding parent- adolescent inter-relationships. the study covered 19 town districts in tehran.   following a multi-stage process 150 girls and boys attending secondary school with an age range of 13-15 years were selected randomly.   a two parts questionnaire was developed. the first part covered information on personal and soci...

conclusions maternal physical activity affects children’s physical activity, and is affected by mother’s self-efficacy. yet based on the findings of this study, regarding the role model effects of mothers in children aged 10-12 years, researchers proposed that interventions related to physical activity in children would work better if they are set to increase self-efficacy in mothers, which in ...

     Todays, the parent company has a great role in managing and monitoring subsidiaries and companies in promoting their industrial activities. But, the main problem for pharmaceutical parent companies is the lack of clarity and confusion of responsibilities between units. Successful parenting needs to create the element of 'fit' between the ways parent operates – parent characte...