Equipercentile equating is an alternative version of observed score equating that can accommodate non-normal response distributions. It corrects for differences in mean and standard deviation but also higher distribution moments, such as skewness and kurtosis. This helps harmonize instruments, where, for example, respondents mostly choose high (or low) response options. …
On 20 March, we celebrate the International Day of Happiness. The non-profit organization Action for Happiness suggests in the context of its campaign how to celebrate the day: “Keep Calm. Stay Wise. Be Kind.” This is undoubtedly a piece of advice we can take to heart in these challenging times …
The outbreak of COVID-19 has created new challenges for face-to-face research activities, including conducting in-person cognitive interviews. The first lockdown in Germany in mid-March 2020 coincided with the preparation phase of a pretest that we planned to conduct face-to-face in our pretest lab in Mannheim. Since we were no longer …