Development of the three-tiers diagnostic test and students level of understanding and misconception in genetics
<p>This study is aimed to develop a valid and reliable three-tiers diagnostic test in genetics.</p><p>The study also aimed to assess pre-university students level of understanding and</p><p>misconception in genetics by utilising t...
Saved in:
| Main Author: | |
|---|---|
| Format: | thesis |
| Language: | eng |
| Published: |
2022
|
| Subjects: | |
| Online Access: | https://ir.upsi.edu.my/detailsg.php?det=9505 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | <p>This study is aimed to develop a valid and reliable three-tiers diagnostic test in genetics.</p><p>The study also aimed to assess pre-university students level of understanding and</p><p>misconception in genetics by utilising the developed test and to explore the</p><p>misconception issue. It has employed a developmental design involving adaptation,</p><p>validation and pilot study phase. The test named as Three-Tiers Diagnostic Test in</p><p>Genetics (3-TDTG) consists of 15 questions was administered in the empirical study.</p><p>Ten biology experts and 30 pre-university students were involved in the developmental</p><p>phase, whereas 455 students of a matriculation college in northern peninsular Malaysia</p><p>involved in the empirical study. Seven of them were purposely selected to be</p><p>interviewed, along with six biology lecturers. The findings suggest the 3-TDTG to be</p><p>valid with S-CVI values of 0.98 and 0.96 for face and content validity respectively. The</p><p>false positive and negative value was minimised to 10.90% and 5.44%. Excellent</p><p>construct validity was observed as Pearson correlation suggests a significant moderate</p><p>positive relationship between the U2 and CS score, r(453) =.44, p<.01. Reliability of 3-</p><p>TDTG is high with Cronbachs alpha value of 0.78, items mean difficulty index of</p><p>0.37, and mean point-biserial correlation of 0.38. Students exhibited highest</p><p>understanding on monohybrid inheritance and allele concept (U3=86.15%) while</p><p>dihybrid inheritance recorded the highest misconception (M3=18.9%). The interview</p><p>analysis suggests the misconception was due to complex genetics terminologies,</p><p>complex application of multilevel thinking, dissociation of meiotic knowledge,</p><p>memorisation and familiarisation, and poor internalisation of new concepts. To</p><p>conclude, 3-TDTG is valid and reliable to asses students genetics understanding and</p><p>misconception, and the misconception issues were successfully addressed. Finally, the</p><p>study has the implication on teachers where they can utilise 3-TDTG prior to the lesson</p><p>for better lesson planning, while researcher can employ the test to expand the</p><p>knowledge in wider scope.</p> |
|---|