TY  - JOUR
T1  - Investigation of Parallel Resistive Circuit PCUT-40 Instrument Construct Validity to Assess Engineering Students understanding in Electricity
AU - Azrilah, A.A. AU - Nazlinda, A. AU - Saidfudin, M. Mohd AU - Zaharim, A. 
JO  - Research Journal of Applied Sciences
VL  - 8
IS  - 10
SP  - 470
EP  - 476
PY  - 2013
DA  - 2001/08/19
SN  - 1815-932x
DO  - rjasci.2013.470.476
UR  - https://makhillpublications.co/view-article.php?doi=rjasci.2013.470.476
KW  - Learning outcomes
KW  -instructional objectives
KW  -performance assessment
KW  -engineering education
KW  -instrumentation
KW  -construct validity
AB  - It has come to the attention of physics instructors that the 
  engineering students enrolled in Malaysian universities do not possess sound 
  conceptual understanding in basic electricity. Preconceptions and misconceptions 
  regarding this subject matter especially on the topic of parallel resistors 
  have been seen to exist amongst aspiring engineering degree students. Ironically, 
  to date there are not many effective measures taken to arrest this issue. In 
  addition, the existence of appropriate instruments within the local mainstream 
  to measure these students’ conceptual 
  understanding of the related topic of parallel resistors is insufficient. Among 
  the few claimed instrument was designed by Beh has been used to assess the students’ 
  conceptual understanding which has revealed some significant findings and led 
  to some suggestions for the improvement of the current electricity syllabus 
  and teaching instructional methods. However, recent developments within the 
  Malaysian Institution of Higher Learning in science education system, call for 
  a re-validation and improved measurement instrument. The aim of this research 
  is to investigate the validity of this instrument, PCCUT_40-Parallel Resistive 
  Circuit test using Rasch analysis in measuring the conceptual understanding 
  of engineering students in institutions of higher learning in Malaysia on the 
  topic of parallel resistors. The methods used are by purposive sampling on recently 
  enrolled engineering students. The instrument focused on the six main domains 
  which are “the meaning of parallel”, 
  practical knowledge of “current”, 
  “voltage”, “resistance”, 
  followed by “circuit connection” 
  and finally “the mental model”. 
  Data collected were analyzed using WINSTEPS version 3.71.0.1. The result shows 
  that the instrument has ‘excellent’ 
  item reliability of 0.94 logit, SE 0.33 and ‘good’ 
  item separation of 3.82 logit, SE 0.30. Quality control procedures have resulted 
  in an item reduction from 40 to only 28 items, thereby producing a better instrument 
  in measuring the students’ conceptual 
  understanding of parallel resistors, the new PCCUT_28.
ER  -