Hi i am doing a project on how class room exercise breaks improve attention and learning in school students. I want to measure arousal by pairing it with Heart Rate and measuring the heart beat by a device. pls suggest is there a better measure to measure arousal as is sample size is 30.Also pls suggest how to measure heart beat for 30 students individually at the same time .
1. Purchase a pulse oxymeter its very cheaper (2500 Rupee in Pakistan) and use it on every student no need of one minute monitoring it will report you the pulse rate and oxygen saturation with in 2 seconds . You can cover 30 students with in a minute or so .
2. Increase the sample size to 100
3. You can also add another parameter to your study that is Variation in Oxygen Saturation that is extra benefit with pulse oxymeter.
you can ask each student to measure their own pulse and report to you at the same time as long as it does not hinder your study protocol.
Dear
I will suggest following:
1. Increase sample size as suggested earlier to avoid type-II statistical error. OR else the power of your study will be minimal to prove or disapprove your hypothesis
2- Pulse rate, blood pressure and pulse oximetry change readings every second and i guess it will not be a better idea to rely simply on these tools to measure arousal/attention span.
3- I suggest some blind-ended questionnaire based format may be introduced along with this to get real time assessment from student about how they actually feel .
4-You can also introduce some quiz to check out there performance in terms of arousal or otherwise to tangible measure the results for comparison.
5-Self-assessment of pulse may not be a good idea as it would be variable and differences will be found between reading so imprecision will increase.
i hope this helps.
Warm regards
Dr Sikandar
Ashique Ali, Sajal Singh and Sikander Hayat Khan thank you for the responses.
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