It sounds like your text is about training of some sort, although you don't give much context. "Presencial" in training usually means "classroom learning" or "face-to-face learning" (as opposed to distance learning). As far as "tallerismo" is concerned, I found the following:

Esta experiencia demuestra la importancia de no hacer "tallerismo", es decir, talleres y talleres sin tener antes una estrategia clara de a dónde se quiere llegar con la capacitación. No se trata de hacer intervenciones puntuales, sino de construir procesos y generar transformaciones.
http://www.eurosur.org/GEM/GEM21.HTM

I think the following text, which uses both "workshop approach" and "workshop syndrome," is parallel:

There is a growing body of literature on teacher professional development that shows that the “workshop approach” in which staff might participate and earn continuing credits is not the most effective way to ensure change in practice. While these workshops might provide very valuable information, it is often provided as a “one-shot” dose and there is little to no follow through to support the teacher as she ventures out and tries something new. Therefore, this project seeks to avoid the workshop syndrome by utilizing existing IHE preparation programs that are purposefully and sequentially developed and in which candidates will engage over at least a year’s time in order to complete the nine-hour endorsement, and over four year’s time to complete the paraprofessional program.
http://www.lrc.edu/rippell/grant.htm

Hope it helps.