PSYC 251 Lecture Notes - Lecture 2: European Association For International Education, Dependent And Independent Variables, Ath
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Agreement between raters i. e. rater (cid:1005) a(cid:374)d (cid:1006) s(cid:272)ori(cid:374)g a (cid:272)hild"s (cid:272)hara(cid:272)teristi(cid:272) or behavior. Measure has good reliability when both provide similar scores or rating. If not good, this is a sign that better definition of measures is necessary. There may be variability but difference should not be big. May be due to condition of the person: validity. Extent that a test is measuring what it is intended to measure. Two types of validity (there are more) Whether the effects were truly the results of the manipulation we made. Did our actions cause the effect? i. e. playing educational video game and testing after 2 yrs. Not good because children will improve in 2 yrs anyway. Lab studies allow experimental control over surroundings but it may have too much control. Therefore, it may not be generalizable in real life situations. 3 context for collecting data about children: interview context. Structural -> participants in the study are asked same questions.
