Missing Magnitudes

Grounding magnitudes

Over the last few decades, different studies have been directed toward a better understanding of how humans use perceptual information in order to estimate magnitudes. Converging data from different research domains indicate that the processing of time, space, and other quantities frequently unfold together in the human brain and cognition. The idea of a common metric that regulates the ability...

Magnitudes of fractions 1 RUNNING HEAD: MAGNITUDES OF FRACTIONS Representations of the Magnitudes of Fractions

We tested whether adults can use integrated, analog, magnitude representations to compare the values of fractions. The only previous study on this question concluded that even college students cannot form such representations and instead compare fraction magnitudes by representing numerators and denominators as separate whole numbers. However, atypical characteristics of the presented fractions...

Mental Magnitudes

Regression problems for magnitudes

S U M M A R Y Least-squares linear regression is so popular that it is sometimes applied without checking whether its basic requirements are satisfied. In particular, in studying earthquake phenomena, the conditions (a) that the uncertainty on the independent variable is at least one order of magnitude smaller than the one on the dependent variable, (b) that both data and uncertainties are norm...

Databases for physical magnitudes

The construction of database for physical magnitudes is shown. The architecture of the clientserver type is used. The Linux Red Hat 8.0 system is exploited as the software platform. The Apache server, served by PHP programming language and cooperating with database MySQL type is used. The created database is accessible by Internet and makes possible access to information about the global proper...