please identify the key components of the study.

Please read the attached article, Smoking in pregnancy tied to lower reading scores.
Using what we have covered in this course about research methods, please identify the key components of the study. Be sure you include information about: purpose of the study (researchable question) (2 pts), predictor (independent) variable (construct and how it was measured: 1 pt), outcome (dependent) variable (construct and how it was measured: 1 pt), participants (who researchers collected data from/about) (1 pt), findings (1 pts), and critique the conclusions, including at least two limitations or other potential variables that could explain these findings (3 pts) (plus 1 pt for writing quality).
double-spaced and typed with 1” margins and standard 12-pt. font (Times New Roman is recommended)

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