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	Research Method 2: Reliability, Validity, Data Gathering Tools, Types of Instruments, Reliability of Measurement, and Errors of Measurement: Test-retest reliability, Parallel forms reliability, Inter-rater reliability, Internal consistency reliabilit Gift Wrapping: Add (Change or Remove) Gift Message: Configurable Options: Change	Remove	$7.99	$7.99
	Research Method 3: Internal Threats, Instrumentation, Split-half Reliability, Replication of Study, and Minimizing or controlling Threats to Internal Validity: No-equivalent Control Group, History, Maturation, Testing, Selection of Subjects... Gift Wrapping: Add (Change or Remove) Gift Message: Configurable Options: Change	Remove	$4.99	$4.99
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