Any studies on combined effect of trait mindfulness and stressors on attention control?

looking forward for website, seek permission form authors to use mindfulness or stress related scales

In my first hypothesis, I calculated a mixed anova with repeated measures to find out whether perceived stress (recorded at t1, t2, t3) is reduced after participation in a mindfulness intervention compared to a control group over the course of the three time points. The effect was not significant. Now I would like to test in my second hypothesis whether the reduction of the perceived stress score is moderated by the mindfulness score (recorded at t1, t2, t3) over the course of the three measurement points. Can I test the hypothesis even if I actually know that the reduction (tested in hypothesis 1) is not significant? And if so, how can I proceed?

E.g. what would be the main stressors targeted in depression?

I am currently designing a research focused on reading comprehension which includes an intervention program (pre/post measures). I was suggested to control baseline attentional level, since the nature of the intervention is expected to be highly related with attention. Now, the intervention will be implemented in a classroom context, so that there will be collective activities as well as individual ones. Because of time constraints, it would ideal to measure all participants at once, if possible. Alternatively, a brief test could do. The question is: does anyone know about some attention test that could collectively applied (say, in a computer lab)? If that is not possible, can any suggest some brief digital test? Test reliability is highly valued too.

Thanks

Refers to the measurement of subjective utility or its neuroeconomic brother, subjective value. Ideally in isolated laboratory settings, i.e. no situational factors involved.

I would expect different heuristics or biases observed in such DM tasks due to the more abstract nature of public goods (PG), the issue of value appropriation, and perhaps stronger influence of emotions (or other factors).

I'm looking for reactions to the nature of the choice object that are much more pronounced for or unique to PG .

I think scope insensitivity is one such thing but there should be more.

However, I'm having a hard time locating good articles for this question. Do you know any?

Mindfulness is now widely accepted practice for improving physical and psychological well-being. Recently, one participant in mindfulness-based interventions who is trying to integrate mindfulness in every-day life experiences reported to me that she had experienced palpitation and headache during her mindfulness practice. This rare observation leads me to ask about the risks (negative consequences) of mindfulness practice!  

Mindfulness is used for cognitive therapy, stress reduction, mind-fitness training for the military (pre- and post-deployment), cancer treatment, education, sports performance, etc. What are your experiences with Mindfulness? Is Mindfulness an effective therapy? What environments would Mindfulness not be effective in?