Dr. Leising conducts observational studies of adolescents interacting with peers during problem-solving tasks. She records each 30-minute interaction and then has three different research assistants in her laboratory code the adolescents' prosocial behaviors.

She is interested in determining how much agreement there is among the three coders so she calculates a correlation coefficient as a measure of:

Question

Dr. Leising conducts observational studies of adolescents interacting with peers during problem-solving tasks. She records each 30-minute interaction and then has three different research assistants in her laboratory code the adolescents' prosocial behaviors.

She is interested in determining how much agreement there is among the three coders so she calculates a correlation coefficient as a measure of:

BlackTom AI · Accepted Answer

Dr. Leising is examining how consistently three different research assistants code the same observed behaviors across 30-minute interactions. This setup is about the level of agreement or consistency among independent raters evaluating the same phenomenon.
Option 1: external validity. This term refers to the extent to which study findings generalize beyond the specific sample or setting, not to how similarly raters judge behaviors. Therefore, external validity is not the right focus here.
Option 2: interrater reliability. This exact concept concerns the degree to which different raters/observers provide consistent estimates or codes for the same phenomena. In practice, researchers often compute a correlation or other agreement statistic to quantify this consistency across coders, which matches what is described in the scenario.
Option 3: test-retest reliability. This type of reliability assesses the stability of a measure over time, typically by administering the same test to the same subjects on two occasions. It does not address agreement among different coders, so it does not fit this situation.
Option 4: internal reliability. This concept concerns the consistency of items within a single measurement instrument (e.g., a survey or test) and how well the items measure the same construct. It is not about agreement between separate coders coding the same behavior, so it is not applicable here.

PSC 041 001 SQ 2025 Weeks 3 & 4 Quiz

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