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Artifacts that arise and affect the internal validity in research are :1. History2. Randomisation3. Maturity4. Instrumentation5. Experimental mortality6. Matching Code :

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The UGC NET General Paper on Teaching & Research Aptitude is an exam designed to test the teaching and research skills of Indian teachers to determine their eligibility for college lectureship. 
 


Artifacts that arise and affect the internal validity in research are :<br />1. History<br />2. Randomisation<br />3. Maturity<br />4. Instrumentation<br />5. Experimental mortality<br />6. Matching Code :






 
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