Small-Step Live Programming by Example [pdf]

The video for it is here, if anyone wants to see it being used: https://www.youtube.com/watch?v=VqIy4iuSpzI

Some methodological problems (identified by the authors):

"There are also several threats to the validity of our results. Our survey was conducted in the presence of one of the authors, which could lead to a social desirability bias. Additionally, the phrasing of questions was not neutral (e.g. “SNIPPY helped me write my code” instead of “How helpful was SNIPPY in writing your code”). (...)

Finally, the small sample size and short length of tasks could be a threat to the internal validity of the study."