235 reputation
17
bio website joshuawiley.com
location California
age
visits member for 1 year, 9 months
seen Mar 24 '13 at 4:27

Jul
8
awarded  Yearling
Mar
24
comment What is the standard error of measurement for teacher made multiple choice tests?
@JeromyAnglim I agree with that, with respect to absolute performance. However, the implicit assumption there is that teachers actually have a valid measure of absolute performance. I think that is a much stricter assumption than that they have a valid measure of relative performance (I am open to being argued out of that). Regarding the accuracy of the test, I am not sure how reasonable any heuristic could be. That is dependent on the relative (in)dependence of items, right? In the extreme, can a teacher ask the same question another 20 times to get to 100 and still be more accurate?
Mar
15
awarded  Commentator
Mar
15
comment What is the standard error of measurement for teacher made multiple choice tests?
A major issue here is how related are the items? In particular, I would worry that the item similarity increases as the number increases --- a 20 item test may be rather different, but a 200 item test may have substantial redundancy.
Mar
15
answered What is the standard error of measurement for teacher made multiple choice tests?
Feb
17
revised How to adjust SSE or RMSE for the number of free parameters in the model?
Converted formulae to LaTeX
Feb
17
suggested suggested edit on How to adjust SSE or RMSE for the number of free parameters in the model?
Aug
11
comment What are some known roles or correlations of glucocorticoid receptor function to behaviour?
My apologies for a half hearted reply (will try more later). Perhaps you can be more detailed what you are interested in? This may be controversial, but I do not think there is much evidence linking specific genes to behavior. Some research searches for endophenotypes which are, hopefully, more proximal biologically to genes of interest. I have a small handful of information on how GRs can be related to some physiological processes (e.g., immune function), if that is of interest. I could also speculate wildly about how changes in the immune system could be related to behavior but...
Aug
6
awarded  Nice Question
Aug
2
comment Web-based tools for documenting studies?
Seems interesting. Thank you!
Aug
2
comment Is there evidence that brain and mind are separate?
I also do not know of any such studies. Slightly obnoxious or not, @Xurtio did so for good reason, I think. I know a lot about certain psychological constructs, but even on areas I consider myself expert, I could never claim to come close to knowing the entire literature. Studies published in other languages are not always translated. Old studies are not necessarily published online (although many are). And all of that does not even get into the issue that multiple keywords may be used for the same general idea.
Aug
2
comment Web-based tools for documenting studies?
I have seen that. It is a good idea that hopefully catches on more.
Jul
14
comment Can psychosomatic reactions be completely unconcious?
Fatigued breast cancer patients are one population who have been studied and found to have a lack of cortisol. If you expose them to a stressor, they appear unable to mount the typical cortisol response, despite reporting high levels of stress. The distinction is tricky because their cortisol slopes may appear similar to a healthy person who simply does not find an event stressful (I'm thinking primarily of the Trier Social Stress Test experimental paradigm by Kirschbaum, but there are others). I believe hypo basal cortisol levels are rare (diurnal rhythm may atypical though).
Jul
13
comment For depression diagnoses, does one make a clear distinction between endogenous and exogenous causes of depression?
If exogenous factors -> physiological alterations -> depression, then medication can still act on that pathway whether the initiation was at the physiological level or some environmental aspect. The corollary is that if physiological alterations -> depression, BUT also exogenous factors -> physiological alterations, then phsyiologically initiated depression may be changeable via exogenous pathways. To wit, both medication and psychotherapy or exogenous factors may play a salutary role in either exogenously or endogenously induced depression.
Jul
13
awarded  Scholar
Jul
13
accepted Web-based tools for documenting studies?
Jul
13
comment Web-based tools for documenting studies?
The preregistered hypotheses is pretty cool. Actually, I really like the whole idea. This is pretty much exactly what I was hoping for (if not quite the scale I hoped for).
Jul
13
awarded  Teacher
Jul
13
answered How can prolonged stress lead to a sustained reduction in cognitive functioning?
Jul
10
comment Web-based tools for documenting studies?
Good thoughts. I think for larger studies, there often has to be documentation anyway (to standardize interventions, etc. across different staff working on the project or multiple sites). Part of where I envisioned this ultimately going would be projects like that, not per se a little study I run by myself. Beamer is very nice, but you might also check out HTML5 slides. I have seen some very cool stuff down with markdown (which is relatively easy) for both HTML and creating PDFs.