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	<title>Essay Blog &#187; internal validity</title>
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		<title>Dissertation: Physical Education and Academic Performance – Literature Review. Part V</title>
		<link>http://www.urgentcustomessays.com/blog/2010/01/dissertation-physical-education-and-academic-performance-%e2%80%93-literature-review-part-v/</link>
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		<pubDate>Wed, 20 Jan 2010 09:45:57 +0000</pubDate>
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				<category><![CDATA[Dissertation]]></category>
		<category><![CDATA[1997]]></category>
		<category><![CDATA[Academic Performance]]></category>
		<category><![CDATA[Caterino]]></category>
		<category><![CDATA[Caterino & Polak]]></category>
		<category><![CDATA[Dawson]]></category>
		<category><![CDATA[internal validity]]></category>
		<category><![CDATA[Janz]]></category>
		<category><![CDATA[Jequier]]></category>
		<category><![CDATA[Labarre]]></category>
		<category><![CDATA[Laurencelle]]></category>
		<category><![CDATA[Lavalle]]></category>
		<category><![CDATA[literature review]]></category>
		<category><![CDATA[Mahoney]]></category>
		<category><![CDATA[Mirjana]]></category>
		<category><![CDATA[physical education]]></category>
		<category><![CDATA[Polak]]></category>
		<category><![CDATA[Quebec health survey]]></category>
		<category><![CDATA[Rajic]]></category>
		<category><![CDATA[sample dissertation]]></category>
		<category><![CDATA[Shephard]]></category>
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		<category><![CDATA[study]]></category>
		<category><![CDATA[Tremblay]]></category>
		<category><![CDATA[Trudeau]]></category>
		<category><![CDATA[Trudeau et al]]></category>

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		<description><![CDATA[The fact that the subjects were randomly selected reduced the chances of threats to internal validity. The sample size was derived from a wide cross-section of socioeconomic status and ethnic groups. The weakness of the study was the fact that there were no control schools in phase II. Furthermore, there were some reported differences in [...]]]></description>
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