NURS 5366 Assignment 3: Understanding
Reliability and Validity in Research
Instruments REAL EXAM!!! 2026
A researcher develops a new instrument to measure coping skills and conducts a pilot study to compare
the new tool with an existing tool that measures this concept. -ANSWER ✔✨---Convergent validity
A researcher performs a series of pilot studies to evaluate whether a measurement tool produces
consistent results. -ANSWER ✔✨---Reliability
A researcher develops a 7-point Likert scale to evaluate feelings of well-being in patients who are
undergoing chemotherapy. The researcher administers this measure to other, similar patients in other
medical centers. -ANSWER ✔✨---Reliability
In a research study, ambulatory clinic nurses teach children with asthma how to monitor peak expiratory
flow volumes and how to use metered-dose inhalers to determine whether asthma control scores
improve. The researcher discovers inconsistencies in how these measures were taught and how well the
children understood the concepts. -ANSWER ✔✨---Intervention fidelity
A researcher reviews demographic characteristics of potential study subjects, such as age and gender, to
determine whether these characteristics may influence the outcome of the study. -ANSWER ✔✨---
Internal validity
A researcher conducts a quasi-experimental study to determine whether there is improved weight gain
among premature infants who are fed according to cue-based protocols. The researcher trained
neonatal intensive care nurses to apply cue-based feeding to orally fed infants and notes a statistical
difference in weight gain between infants fed according to cue-based protocols and those fed according
to standard protocols. The reviewer notes that parents who gave consent to participate in the study
