The Development of Spatial Skills in Elementary School Students.

Through five waves of data collection, this longitudinal study investigated the development of spatial skills in 304 elementary school children (M  = 7.64 years) as they progressed from the second to fourth grade. The study focused on whether multiple latent classes with different developmental profiles best explain development.

The SMN binding protein Gemin2 is not involved in motor axon outgrowth.

A paramount question in spinal muscular atrophy (SMA) research is why reduced levels of SMN, a ubiquitously expressed protein, leads to a motoneuron-specific disease. It has been hypothesized that SMN may have a dual function: a role in snRNP assembly and a novel function that affects axons. We have previously shown that decreasing Smn levels in zebrafish causes defects in motor axon outgrowth.