Self-report

The advantages of LEMtool as self-report instrument

Recent technological advances have made it possible to measure people’s ‘emotions’. What these advancing approaches have in common is a focus on behavior (facial expression and bodily gestures) or physiological metrics (heart rate, skin conductance, EMG, pupil dialation). Even though the progress in technology helps improve the used instruments, there are some major limitations, especially in measuring web and media emotions.


  • Physiological approaches mainly measure ‘affective arousal’ and do not provide insight in whether it is positive or negative, let alone which specific emotion is felt. To know if a user feels boredome or desire, you will have to ask them. LEMtool is perfect for that.
  • The majority of instruments for behavioral or physiological emotion measurement (still) require lab setups which can be obtrusive for the user and are definitely more time-consuming and expensive. LEMtool provides a web based environment; users are asked to participate online and experiments can be setup really quickly.
  • The abovementioned instruments are not able to provide detailed information on the exact spots and areas that evoke the emotions with the users. LEMtool’s main objective is to give insight in the the emotion, the area and the appraisal
  • If you want to measure emotions, the abovementioned alternatives do not provide the insights that can help improve the design emotionally. In a user experience there is another important factor: the overal perception of the experience and perceived usability of the product. It is not possible to measure perception ‘objectively’ and in this case self-report can be especially helpful. LEMtool not only asks users to point out specific area’s and the emotions they evoke, but also WHY it makes them feel these. A result is vital insight in the perception the user has of the website.