Research Article
Working towards Usable Forms on the World  Wide Web: Optimizing Date Entry Input Fields
Table 4
Performance overview of the six versions.
| | 
 |  |  | Avoid wrong format | Avoid wrong date | Time efficiency | User satisfaction |  | 
 |  | Version 1 (separate) | 0 | + | 0 | 0 |  | Version 2 (drop-down) | + | + | − | 0 |  | Version 3 (left) | 0 | + | + | + |  | Version 4 (inside, permanent) | 0 | + | 0 | − |  | Version 5 (inside) | − | + | + | + |  | Version 6 (calendar) | + | − | − | 0 |  | 
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