<p>On cogsci there was migrated a question from academia. I think it better fits here I could be wrong but the design looks like a multivariable feed forward neural network. 
<a href="https://cogsci.stackexchange.com/questions/6026/what-do-we-call-the-middle-variables-in-a-complex-research-model">https://cogsci.stackexchange.com/questions/6026/what-do-we-call-the-middle-variables-in-a-complex-research-model</a></p>
