Three experiments addressed the questions: what tactics do individuals use to solve Su Doku puzzles, and what determines the difficulty of using these tactics? A typical Su Doku consists of an array of 9x9 cells; the array is divided into nine boxes of 3x3 cells. Some of the cells in the array already contain digits. The task is to fill in all the empty cells so that each row, column, and box c...

Alternative reproductive tactics (ARTs) coexisting within a population are found in many organisms. Their existence has been an enduring puzzle in evolutionary biology. Why should selection produce distinctly different alternatives to reach the same goal? How can such alternative solutions coexist in a population? What determines their evolutionary stability? Here we outline ultimate and proxim...

OBJECTIVES The objective of the study was to examine the repertoire and intensity of manipulation tactics of neurotic patients in everyday life and during therapy, as well as diagnosing the intensity of Machiavellianism in neurotic patients. METHODS There were 111 study subjects: 44 patients with diagnosed neurotic disorders, 44 people from the control group and 23 therapists. The manipulatio...

This study investigated the effects of subject knowledge and search experience on novices’ and experienced searchers’ use of search tactics in online searches. Novice and experienced searchers searched a practice question and two test questions in the ERIC database on the DIALOG system and their use of search tactics were recorded by protocols, transaction logs, and observation. Search tactics ...

Visual information is increasingly important yet methods for its access by blind persons are inadequate. This paper describes and evaluates TACTICS, a system for the automatic visual to tactile translation of digitized images. The results of experiments testing perception of TACTICS-generated tactile images are provided.