Fixed-interval frustrative nonreward in profound retardates

Homosexuality in institutionalized retardates.

directly onto the hands, which were subsequently scrubbed, it would be improbable that " q u e n c h i n g " of activity would be an issue for concern. Regarding concern # 3 , single plates were not used, rather the solutions were plated in triplicate and a mean value used. The dilution fortunately did inactivate the formulation, but it also provided a comfortable number of colonies per plate f...

Comparative psychology of surprising nonreward.

The surprising or unexpected omission of an appetitive reinforcer has at least two effects: An allocentric effect according to which the organism updates knowledge about the environment, and an egocentric effect that allows the organism to learn about its own emotional reaction to the change. This egocentric effect (traditionally called frustration) is correlated to activation of the hypothalam...

The sterilization rights of mental retardates.

Interval censored regression with fixed effects

This paper considers estimation of a fixed-effects model with an interval-censored dependent variable. In each time period, the researcher observes the interval (with known endpoints) in which the dependent variable lies but not the value of the dependent variable itself. Two versions of the model are considered, a parametric model with logistic errors and a semiparametric model with errors hav...

Interval Completion Is Fixed Parameter Tractable

We present an algorithm with runtime O(knm) for the following NP-complete problem [9, problem GT35]: Given an arbitrary graph G on n vertices and m edges, can we obtain an interval graph by adding at most k new edges to G? This resolves the long-standing open question [17, 7, 25, 14], first posed by Kaplan, Shamir and Tarjan, of whether this problem was fixed parameter tractable. The problem ha...