Evaluating the Equal-Interval Hypothesis with Test Score Scales

A New Method for Solving the Fully Interval Bilevel Linear Programming Problem with Equal Constraints

Most research on bilevel linear programming problem  is focused on its deterministic form, in which the coefficients and decision variables in the objective functions and constraints are assumed to be crisp. In fact, due to inaccurate information, it is difficult to know exactly values of coefficients that used to construct a bilevel model. The interval set theory is suitable for describing and...

Welfare Adjusted Scale Score: Method Toward the Development of an Equal-Interval Welfare Scale

It is common to question the equal-interval assumptions of most academic scale scores. Even if interval assumptions hold, it is problematic to assume equal-interval distances with respect to benefits. For example, equivalent gains at the top and bottom of the distribution are unlikely to yield equivalent welfare returns. I develop a method to estimate the welfare returns to academic achievement...

Finite equal-interval measurement structures

Spatial interval discrimination with blurred lines: black and white are separate but not equal at multiple spatial scales.

We used Gaussian blurred lines of same- and opposite-polarity to measure the effects of blur on 3-line spatial interval discrimination (bisection). The results of our experiments can be summarized as follows. Spatial interval discrimination (3-line bisection) thresholds are proportional to the separation of the lines (i.e. Weber's law). At the optimal separation, spatial interval discrimination...

Airlines as Baseball Players: Another Approach for Evaluating an Equal-Safety Hypothesis

Airlines as Baseball Players: Another Approach for Evaluating an Equal-Safety Hypothesis David Czerwinski, Arnold Barnett Business leaders routinely seek to apply best practices, but they want clear evidence that a particular practice is superior to available alternatives. However, in the context of safety among entities like airlines or chemical plants, major disasters are extremely rare, whic...