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2007 ANNUAL REPORT - cosmos - Bowling Green State University

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an ID and others wrote only a partial ID. Cohen’s d was then calculated to estimate the effect<br />

size for the difference between pre-SI and post-SI scores, as well as between post-SI and AY<br />

scores.<br />

For TeachOhio participants, The Teacher Beliefs Inventory (TBI) analysis of change in<br />

participants’ beliefs was also conducted for each of the three sections of the survey, in addition<br />

to the following subscales: Outcome Expectancy (OE), Self Efficacy (SE), Classroom<br />

Environment (CE), Teaching Activities & Assessment (TA), Teacher’s Role (TR), Instructional<br />

Goals (IG), Traditional Strategies (TS), and Reform Strategies (RS). Appropriate items were<br />

reversed before computing subscale and section totals. A dependent t-test was then used to<br />

assess change from pre-SI to post-SI. The post AY survey data were not used due to a very low<br />

response rate. Cohen’s d was then calculated to estimate the effect size for the difference<br />

between pre and post-SI scores, as well as post-SI and AY scores.<br />

For all other NWO participants, The Teacher Beliefs Inventory (TBI) analysis of change in<br />

beliefs was conducted for the first two sections of the TBI, in addition to their following<br />

subscales: Outcome Expectancy (OE), Self Efficacy (SE), Classroom Environment (CE),<br />

Teaching Activities & Assessment (TA), Teacher’s Role (TR), and Instructional Goals (IG).<br />

Appropriate items were reversed before computing subscale and section totals. A dependent ttest<br />

was then used to assess difference between the retro ratings (i.e., what the participants<br />

believed at the beginning of the year) and the TODAY ratings (i.e., what the participants<br />

believed on the day of taking the survey). Cohen’s d was then calculated to estimate the effect<br />

size. Due to the nature of the questions asked, data for the third section of the TBI, i.e., the<br />

Instructional Practices Inventory, were collected for only one scale: the Post Today<br />

scale/period. Thus, only the Post Today data were reported for this section, as well as its<br />

subscales: Traditional Strategies (TS), and Reform Strategies (RS).<br />

Conducting separate TBI analyses for three groups (TEAMS, TeachOhio and Other NWO<br />

participants) was chosen for two major reasons – loss and comparability of the data. More<br />

specifically, the TeachOhio data were available for pre-SI and post-SI, with very few cases from<br />

the post-AY administration. Hence to avoid loss of data, only pre-post SI data for TeachOhio<br />

were analyzed. The TEAMS data were available and analyzed for three time periods (pre-SI,<br />

post-SI and post-AY). For all other participants, only 13 common cases were obtained when<br />

merging pre-AY and post-AY. Therefore, we used post-AY survey data for this group and<br />

analyzed their retro responses along with their TODAY responses.<br />

Interviews<br />

The interview data collected from the NWO participants (in person) and higher education faculty<br />

(by e-mail) were examined for themes and separately for each evaluation question.<br />

Session Evaluations<br />

The session evaluations data were examined for numeric ratings as well as qualitative<br />

responses and separately for each evaluation question.<br />

PD Observations<br />

The ratings of professional development session observations were calculated by taking the<br />

average rating across all sessions for each category (design, implementation, content, culture,

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