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Derrington 2012 thesis.pdf - Anglia Ruskin Research Online

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Figure 6.2.3.2 CVC students: the difference between scores in pre- and post-tests for<br />

BDBI<br />

Change score<br />

#&!<br />

#+!<br />

"&!<br />

"+!<br />

&!<br />

+!<br />

C&!<br />

C"+!<br />

C"&!<br />

C#+!<br />

Change scores for BDBI<br />

CVC<br />

Individual students<br />

Change in BDBI<br />

scores<br />

There is virtually no slope in this table. The student with the highest reported increase<br />

in disruptive behaviour is Joe, who has already been classed as an outlier (6.2.1 and<br />

8.3), however all the other scores are comparable and there is little change amongst<br />

them. This suggests that students feel their behaviour has neither deteriorated nor<br />

improved. Table 6.2.5 shows that the means in both schools are similar if Clare is<br />

removed from the statistics, but there is a greater standard deviation among The<br />

Centre School students than CVC students.<br />

Table 6.2.5 Summary statistics of all change scores in BDBI<br />

Change in BDBI<br />

Centre<br />

School<br />

Modified<br />

Centre School<br />

(without Clare)<br />

CVC<br />

Modified CVC<br />

(without Joe)<br />

N 12 11 9 8<br />

Mean 1.92 0.00 0.33 1.125<br />

SD 8.01 8.01 3.04 2.03<br />

Min -7 -7 -6 -3<br />

Max 23 8 4 4<br />

N (%) positive<br />

change 6 (50%) 5 (45%) 5 (55%) 5 (63%)<br />

Mean increase 5.38 2.86 2.2 2.2<br />

Mean decrease -5.00 -5.00 -2.00 -0.67<br />

Figure 6.2e.iii in appendix 6.2e shows the findings of the students’ T scores according<br />

to the Beck clinical range for disruptive behaviour: before music therapy, 67% of all<br />

! "%%!

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