NewsCor Ninaber started his PhD with the Methodology and Statistics group just a couple of weeks ago. Cor Ninaber studied the psychology master specialization of Methodology and Statistics at Leiden University. Ninaber focused his master thesis on the field of multinomial classification, and completed an internship at TNO Quality of Life.
On the 21st of April 2010, Frank Busing will defend his PhD Thesis on Advances in Multidimensional Unfolding. Busing was born in Amsterdam, graduated in 1983 from the Fioretti College in Lisse and studied Child and Education Studies (propedeuse 1987) and Psychology (degree in 1993) at Leiden University. In 2000 he received his qualification to teach at primary schools from the Hogeschool IPABO in Amsterdam
Multilevel longitudinal data are clustered both structurally and temporally. The hierarchically nested structure induces between-subject dependency because individuals in the same unit may share something in common. The longitudinal aspect of data induces within-subject dependency because observations are made on same subjects over time.