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Conducting Educational Research

Caroll

Caroll

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TABLE OF CONTENTS<br />

Repeated Measures (ANOVA).................................................................... 181<br />

Posttest ANOVA......................................................................................... 182<br />

Pretest/Posttest ANOVA............................................................................. 182<br />

Factorial ANOVA ....................................................................................... 183<br />

Goodness of Fit (Chi Square)...................................................................... 184<br />

Test of Independence (Chi Square)............................................................. 185<br />

Next Steps........................................................................................................ 186<br />

Chapter Self-Check.......................................................................................... 186<br />

Chapter Review Questions .............................................................................. 186<br />

References ....................................................................................................... 186<br />

10. Data Collection and Validity ...................................................................... 187<br />

Chapter Overview............................................................................................ 187<br />

Introduction ..................................................................................................... 187<br />

Quantitative Surveys........................................................................................ 187<br />

Improving Survey Reliability...................................................................... 188<br />

Tests................................................................................................................. 191<br />

Instrument Validity and Reliability ................................................................. 192<br />

Instrument Validity ..................................................................................... 192<br />

Instrument Reliability.................................................................................. 193<br />

Final Words on Instrument Validity and Reliability ................................... 194<br />

Study Validity.................................................................................................. 195<br />

Threats to Study Validity ............................................................................ 195<br />

Writing a Methods Section for a Quantitative Study....................................... 199<br />

Problem Statement ...................................................................................... 201<br />

Context of the Study.................................................................................... 202<br />

Study Sample .............................................................................................. 202<br />

Measures ..................................................................................................... 203<br />

Instrument Development............................................................................. 203<br />

Procedures................................................................................................... 203<br />

Analysis....................................................................................................... 204<br />

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