I am conducting a Hunter-Schmidt meta-analysis. When a study assesses a construct using a one-item measure, what should I enter as the alpha?

I am conducting a Hunter-Schmidt meta-analysis. When a study assesses a construct using a one-item measure, what should I enter as the alpha? I calculated the N-weighted average reliability and...

10 November 2018 7,992 0 View

In a meta-regression, is it possible to have a b weight as high as .75? How do I correctly interpret the B weight in a meta-regression?

I have run an analysis where I am examining whether the percentage of females in the sample moderates the relationship between experiences of mistreatment and withdrawal behaviours. The b weight...

05 June 2018 5,807 0 View

Is there research comparing the implications of need satisfaction depending on how the needs are satisfied (i.e. by the context or the person)?

09 October 2015 4,752 7 View

Should hypotheses always be based on a theory? Can someone refer me to a research paper that emphasizes the need for theory driven hypotheses?

Should hypotheses always be based on a theory? I will provide an example here without variable names. I am reading a paper where the authors argue that X (an action) should be related to Y (an...

08 September 2015 1,025 64 View

If a theory proposes that x relates to y, but there are so many boundary conditions that would eliminate the relationship, shouldn't we just change x?

If a theory proposes that x relates to y but there are so many moderating variables, that when considered, the relationship between x and y becomes non-significant, does it make sense to argue...

08 September 2015 9,333 8 View

Why do the residuals need to be normal when carrying out multi level modeling?

08 September 2014 3,269 7 View

Syntax for Log Likelihood in R?

I am analyzing results from a daily diary study in R using the nlme package. I am using hierarchical linear modelling and am not sure which code to use to examine whether the latter model fits...

06 July 2014 3,728 5 View

How to carry out Multilevel Modeling Person Centering of my predictor variables?

I am analyzing data from a diary study (multilevel modeling) and based on previous research I want to person-mean center my predictor variables. One of my predictors is work-family conflict (WFC)...

05 June 2014 8,127 9 View

Residuals in Multi Level Modeling: How can I examine whether the residuals are normally distributed using either SPSS or R?

I am conducting a cross-level interaction. How can I examine whether the residuals are normally distributed using either SPSS or R?

05 June 2014 1,994 4 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

How to calculate average trend in maximum annual NDVI from MODIS?

I am wanting to calculate the average trend in maximum annual NDVI in Iceland from 2010-2020 using MODIS MYD13Q1 V6. How would I do this? I have currently inserted the NDVI bands from the MODIS...

02 March 2021 752 2 View