摘要: Software development is in essence a human-centered activity, because humans design, implement, and maintain software. Thus, the human factor plays an important role software engineering. One of major activities during entire softwaredevelopment cycle program comprehension: Developers spend most their time with comprehending source code [14]. if we can support developers comprehension, reduce cost development. To improve for example, by tools or programming languages, need to measure it reliably—otherwise, cannot know how why languages affect comprehension. However, comprehension internal cognitive process that inherently eludes measurement.