The Effects of Semantic and Syntactic Instruction on User Performance and Satisfaction in Search User Interface Design

Abstract

Search engines have the potential to assist users in a variety of information retrieval tasks. Unfortunately, field studies show that they consistently fail to meet the usability goals of effective and efficient performance. Two of the primary drawbacks are that users do not apply correct semantic logic and syntax in their queries. This study investigates the use of targeted search hints, a form of in-line help, to improve query construction. The results show that search hints can improve performance, but with interactions that designers must consider. Some hints increase the time required to construct queries. Compound hints can also lead to reduced performance. The implications of these findings are discussed.