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Bonn Intervention Panel (BIP)

Completed Project

Project Management

Stefan Liebig (SOEP), Armin Falk (briq Bonn)

Project Period

July 1, 2014 - July 31, 2021

Commissioned by

University of Bonn

In Cooperation With

Armin Falk, University Bonn and „Behavior and Inequality Research Institute“ (briq), Bonn

The Bonn Intervention Panel (BIP) investigates the development of personality and preferences of children starting at the primary school age until age 25 and beyond. Main focus of our study is the impact of early childhood environment. In particular, we experimentally vary the childhood environment in our sample by giving a randomly chosen subgroup of the sample the opportunity to take part in a mentoring program.


The first part of the project, which have been completed in the fall of 2011, is measuring personality traits and preferences before the start of the intervention for all children (via choice experiments) and their mothers (or other main caregiver).

In the third wave (at the end of 2014)  the interview program bridges between the first two waves and the classical SOEP‐IS. The families answered the standard SOEP‐IS questionnaire batteries and the BIP child and the main caregiver (mother) answered additional batteries. The BIP child took part in incentivized experiments regarding time, risk and social preferences and answered the student questionnaire of the core SOEP. The mothers answered addition question regarding her personality and parenting style.

The 'BIP families' are since 2014 included into SOEP-IS and will be interviewed on a yearly basis to get information on the further development of the children.


Kosse, Fabian; Thomas Deckers, Hannah Schildberg-Hörisch, and Armin Falk (2019): The Formation of Prosociality: Causal Evidence on the Role of Social Environment. In: Journal of Political Economy (online first), doi: 10.1086/704386

Deckers, Thomas, Armin Falk, Fabian Kosse, Pia Pinger, and Hannah Schildberg-Hörisch (2017): “Socio-Economic Status and Inequalities in Children's IQ and Economic Preferences.” IZA DP No. 11158

Deckers, Thomas, Armin Falk, Fabian Kosse & Hannah Schildberg-Hörisch (2015): “How Does Socio-Economic Status Shape a Child’s Personality?” IZA Discussion Paper No. 8977.