When to include covariates?

Hi it's me again! Coming to you with a question about including covariates in a model. So I'm running a mixed effect model in my longitudinal imaging data. I have 4 possible covariates to...

11 February 2021 1,404 1 View

SPSS ANOVA with 2 groups, 3 time points and hundreds of dependent variables?

Hello everyone! I need to run ANOVAs for multiple variables that take place at 3 time points. So I have 2 groups (controls and patients), 3 time points for each measure, and then a plethora of...

22 November 2020 8,032 5 View

How can I measure learners' overall level of "investment" (Norton,2015) quantitatively?

I would like to investigate students' level of investment (not motivation) in an English class. are there any questionnaires I could use for this?

24 March 2020 6,940 3 View

Can we make a Systematic Review when we get zero papers to answer our research question?

I don't seem to find anything published (or unpublished) to answer my research question. Broadly, when I search for "PTSD + Virtual Reality + First Responders" (and all the variants these words...

11 March 2020 3,349 7 View

Does anyone know of a cell line (from C57BL/6 mice) that can induce lymphomas (preferentially NHL) when introduced in SCID mice?

Similar to BJAB (human) or A20 (balb/c) but a C57Bl/6 one

07 May 2018 3,920 2 View

What is (or will be) Prime Minister Theresa May contribution to the United Kingdom public administration and/or public policy (if any)?

Please leave your Country of origin: Age: Sex: So I can better contextualise your answer.

13 February 2018 2,728 4 View

What is (or will be) Prime Minister Justin Trudeau contribution to the Canadian public administration and/or public policy (if any)?

Please leave your Country of origin: Age: Sex: So I can better contextualise your answer.

13 February 2018 7,678 4 View

What is (or will be) President Donald J. Trump contribution to the United States of America public administration and/or public policy (if any)?

Please leave your Country of origin: Age: Sex: So I can better contextualise your answer.

13 February 2018 950 8 View

What is (or will be) President Emmanuel Macron contribution to the French public administration and/or public policy (if any)?

Please leave your Country of origin: Age: Sex: So I can better contextualise your answer.

13 February 2018 1,234 4 View

Questionnaires on perceptions about mental illnesses?

Questionnaires on perceptions about mental illnesses anyone? Any suggestions?

12 January 2018 4,240 27 View

How to access MSCI KLD Stats and Sustainalytics?

Hello all, I'm currently working on my undergraduate thesis and I'm having difficulties trying to access KLD Stats and Sustainalytics because my campus Airlangga University and apparently other...

02 March 2021 8,525 1 View

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View

Which is a lucid standard comprehensive book to guide on psychological scale construction and its standardization?

02 March 2021 7,082 3 View

LOAD DISPLACEMENT CURVES Stiffness increasing in ANSYS non linear analysis. HOW CAN I CORRECT IT?

Hi. I am doing non linear FE analysis using a new material beam under flexural 2 point loading using ANSYS. I have defined a bilinear material model. The solution has converged. In results I am...

01 March 2021 9,911 3 View

How to choose ANN number of hidden layers and nodes?

Hello, Could you please share any interesting research explaining how to choose the number of hidden layers and nodes per layer in case of regression problems using ANN? Thank you, any help would...

01 March 2021 6,200 3 View

PUC19 as a transfer plasmid for lentiviral delivery?

Hello, Is it possible to use pUC19 as a transfer vector to be packed in using the second generation viral particles packaging system( pMD2.G; psPAX2 plasmids)? As far as I understand it there is...

28 February 2021 4,868 2 View

How could I take into consideration the weights of observation in a system of seemingly unrelated regressions (SUR) in rstudio?

I build a model of 4 regression equations (probit and OLS) in R studio. I need to take the weights of observations into consideration. While it is simple to do so for every regression equation,...

27 February 2021 1,233 1 View

Can random sampling have inclusion criteria?

As random sampling means that everyone in the population have an equal chance to be chosen, can it have inclusion criteria? My research participants have been chosen based on the inclusion...

26 February 2021 6,905 10 View

CGA 300 Regulator for CO2 cylinder?

Has anyone ever tried to deliver CO2 with a CGA 300 regulator? I know that a CGA 320 regulator is standard for CO2. The issue is that I currently do not have any free CGA 320 regulators. I also...

25 February 2021 3,292 3 View

What are the patterns of human behavior that lead to COVID-19 infections?

Does data from contact tracing help in establishing patterns of behavior and social interactions that lead to infections? There are cases here in the Philippines where patients have no travel...

25 February 2021 9,002 13 View