Resources

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The EIRG is committed to supporting caregivers, clinicians, and scientists.

Our Resources page contains blog posts with recent updates from the lab, tips to help families support their child’s early development, overviews of key research concepts, and all of the papers published by Dr. Roberts and the EIRG staff.

Use the Categories and Tags lists on this page to find posts of interest. Copies of EIRG papers can be downloaded from their posts under the Published Research section. You can subscribe using your email at the bottom of the page to be notified whenever a new post is added to the Resources section.

Reliability and Validity

Reliability Reliability: consistency or dependability of the data Internal consistency: Measures reliability across items. Tests whether all items are measuring the same thing. Measured using Cronbach’s alpha Test-retest reliability: Measures reliability over time....

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Tests of Intervention Effects

Statistical Tests t-test: This statistical test determines whether there is a statistically significant difference between the means of 2 groups and uses numerical DV.  Chi-Square: This statistical test determines whether there is a statistically significant...

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Hypothesis Testing

Types of Variables Independent Variable: The variable that is manipulated by the researcher, such as treatment, and/or the variable(s) that that is/are thought to affect the outcome.  Dependent Variable: The variable that is measured as a study outcome; the variable...

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Diagnostic Accuracy

Measures of Diagnostic Accuracy Sensitivity: the ability of a test to correctly classify an individual as having a disorder True Positive True Positive + False Negative Specificity: the ability of a test to correctly identify a person as not having a disorder True...

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Intervention Research Designs

Variables Independent Variable (IV): Intervention/Treatment  Dependent Variable (DV): The outcome of the intervention or what we want the intervention/treatment to change.  Experimental Control: Confidence that change in the DV is due to change in the IV. Intervention...

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Types of Data and Statistics

Types of Data Numerical: Quantitative data that have a median, mean, and variability or spread (e.g., age in years, height in inches, # of words spoken) Categorical: Data that groups participants into distinct categories based on certain qualities (e.g.,...

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