Abstraction ability as an indicator of success for learning object-oriented programming?

Jens Bennedsen, Michael E. Caspersen. Abstraction ability as an indicator of success for learning object-oriented programming?. ACM SIGCSE Bulletin, 38(2):39-43, 2006. [doi]

@article{BennedsenC06,
  title = {Abstraction ability as an indicator of success for learning object-oriented programming?},
  author = {Jens Bennedsen and Michael E. Caspersen},
  year = {2006},
  doi = {10.1145/1138403.1138430},
  url = {http://doi.acm.org/10.1145/1138403.1138430},
  tags = {object-oriented programming, e-science, programming, subject-oriented programming, abstraction, feature-oriented programming},
  researchr = {https://researchr.org/publication/BennedsenC06},
  cites = {0},
  citedby = {0},
  journal = {ACM SIGCSE Bulletin},
  volume = {38},
  number = {2},
  pages = {39-43},
}