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We report on a study of novice programmers' object oriented class designs. These designs were analysed to discover what faults they displayed. The two most common faults related to non-referenced classes (inability to integrate them into the solution), and problems with attributes and class cohesion. The paper ends with some implication for teaching that may be indicated by the empirical results.
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Thomasson et al. (2006) studied this question.
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