A preliminary report on the Miami-Oxford Curve-Block Series

Abstract

This series was developed by the author in the interest of obtaining a range of difficulty which would increase by approximately equal steps, present few opportunities for chance success or failure, yet remain nearly self-administrating. Six rectangular blocks of the same over-all dimensions were cut lengthwise to form irregular sections, assemblage being made successively more difficult by increasing the number of cuts. Data were gathered on 93 individuals. Mean time increases from one block to the next and proportional increases from block to block indicate that difficulty increases rather regularly. CRs between mean differences extend from 3.92 to 6.55, and intercorrelations show that the blocks are sufficiently dissimilar for inclusion in one series. (PsycInfo Database Record (c) 2025 APA, all rights reserved)