In the NASA TLX one component (self estimation of achieved performance) looks similar. Maybe construction of that index give you some advice. But generally any human subjective measure depends on many various factors and the results between humans are difficult to compare. If you find any computable index (for example using error level during task realization) such index can be used for objective scale.

A number of domain specific self-efficacy scales can be found in the literature mainly in health and educational research

I had done a research among physical education students and I measured exercise self-efficiency.

Hi Marc, if you're looking for information on how to develop a self-efficacy scale, you might want to visit the page on Albert Bandura. This page was developed by Frank Pajares. Good luck!

http://www.uky.edu/~eushe2/Pajares/self-efficacy.html#instruments

I have found a scales used by Usher and Pajares, 2009 (http://www.academia.edu/963536/Mathematics_motivation_and_self-efficacy_of_middle_school_students) to assess the sources of mathematics SE helpful as a guide in construction my own scale specific to my research. It gives a good starting point and guide to enable you to modify it to suit you.

You can look to this one. It's for sources of self-efficacy in teaching Physical Education at school.

https://www.researchgate.net/publication/236142896_Teacher_self-efficacy_sources_scale_Exploratory_study_with_Physical_Education_Teachers?ev=prf_pub

Article Teacher self-efficacy source’s scale: Exploratory study with...

If you read the article "Effects of management by objectives : studies of Swedish upper secondary schools and the Influence of role stress and self-efficacy on school leaders" in Journal of Applied Social Psychology you will become inspired and get some new knowledge in this area.

How did you go with your research on locating specific Self-Efficacy scales?  Would you be able to share what you have come across?  I am focussing on teacher self efficacy to deliver career development programs in schools and need to decide whether to adapt someone's instrument or develop a new one.

Yes. I have done two articled together with Joakim Wincent using SE scales.

Hi Erik.  Thanks for your quick reply.  Can you point me to the articles so that I can see how you went about your research?

Article: Goal Commitment and Performance: An Empirical Study Incorporating Role-Stress Literature to Reveal Functional and Dysfunctional Influences Erik Lindberg

Journal of Applied Social Psychology 11/2011; 41(11). DOI:10.1111/j.1559-1816.2011.00837.x · 0.83 Impact Factor

Article: Turning stressors into something productive: an empirical study revealing nonlinear influences of role stressors on self‐efficacy Erik Lindberg, Joakim Wincent, Daniel Örtqvist

Journal of Applied Social Psychology 02/2013; 43(2). DOI:10.1111/j.1559-

https://www.researchgate.net/publication/305146229_SELF-EFFICACY_SCALE_CONSTRUCTION_AND_VALIDATION_IN_SWIMMING

I found this one, I think it can be useful for constructing specific scales, have a nice day 

Article SELF-EFFICACY SCALE CONSTRUCTION AND VALIDATION IN SWIMMING

Yes. See my articles i Journal of Sicial Psychology

Turning stressors into something productive: An empirical study revealing nonlinear influences of role stressors on self-efficacy

Journal of Applied Social Psychology, 43(2): 263-274

Goal Commitment and Performance: An Empirical Study Incorporating Role-Stress Literature to Reveal Functional and Dysfunctional Influences

Journal of Applied Social Psychology, 41(11): 2634-2655

//Erik

I had to design a scale to measure sources of self-efficacy in maths problem solving. I found the following papers helpful:

Usher E. L. and Pajares F., (2009) Sources of self-efficacy in mathematics: A validation study. Contemporary Educational Psychology 34 (2009) 89–101

Usher E. L. and Pajares F., (2008) Sources of Self-Efficacy in School: Critical Review of the Literature and Future Directions. Review of Educational Research, Vol. 78, No. 4, pp. 751–796

Best

Gideon

Nice Dear Erik Lindberg