Many teacher education researchers have expressed concerns about the lack of rigorous impact evaluations of teacher preparation practices. I summarize these various concerns as they relate to issues of internal validity, measurement, and external validity. I then assess the prevalence of these issues by reviewing 166 impact evaluations of teacher preparation practices published in peer-reviewed journals between 2002–2019. Although I find that very few studies address issues of internal validity, measurement, and external validity, I highlight some innovative approaches and present a checklist of considerations to assist future researchers in designing more rigorous impact evaluations.
Experimental demonstration of loop state-preparation-and-measurement tomography
We have demonstrated, using qubits encoded in the polarization of heralded individual photons, that loop state-preparation-and-measurement tomography is capable of detecting correlated errors between the preparation and the measurement of a quantum system.
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- Award ID(s):
- 1719390
- NSF-PAR ID:
- 10058702
- Date Published:
- Journal Name:
- Frontiers in Optics 2017
- Page Range / eLocation ID:
- FM2D.2
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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- Free Publicly Accessible Full Text
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Accepted Manuscript1.0
- Conference Paper:
- https://doi.org/10.1364/FIO.2017.FM2D.2
