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	1.	German National Proficiency Scales in Biology: Internal Structure, Relations to General Cognitive Abilities and Verbal Skills. [electronic resource] by Kampa, Nele Köller, Olaf Publication details: Science education Sep 2016 In: Science education vol. 100 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	Frame of Reference Effects Following the Announcement of Exam Results. [electronic resource] by Möller, Jens Köller, Olaf Publication details: Contemporary educational psychology Apr 2001 In: Contemporary educational psychology vol. 26 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	3.	Vocational interests of intellectually gifted and highly achieving young adults. [electronic resource] by Vock, Miriam Köller, Olaf Nagy, Gabriel Producer: 20130724 In: The British journal of educational psychology vol. 83 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	Assessing the instructional quality of private tutoring and its effects on student outcomes: Analyses from the German National Educational Panel Study. [electronic resource] by Guill, Karin Lüdtke, Oliver Köller, Olaf Producer: 20210205 In: The British journal of educational psychology vol. 90 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	5.	Externalizing behaviour, task-focused behaviour, and academic achievement: An indirect relation? [electronic resource] by Becherer, Julia Köller, Olaf Zimmermann, Friederike Producer: 20211117 In: The British journal of educational psychology vol. 91 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	6.	The reciprocal internal/external frame of reference model using grades and test scores. [electronic resource] by Möller, Jens Zimmermann, Friederike Köller, Olaf Producer: 20150210 In: The British journal of educational psychology vol. 84 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	7.	A Semiparametric Approach for Modeling Not-Reached Items. [electronic resource] by List, Marit Kristine Köller, Olaf Nagy, Gabriel Publication details: Educational and psychological measurement Feb 2019 In: Educational and psychological measurement vol. 79 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	8.	Self-esteem, academic self-concept, and achievement: how the learning environment moderates the dynamics of self-concept. [electronic resource] by Trautwein, Ulrich Lüdtke, Oliver Köller, Olaf Baumert, Jürgen Producer: 20060928 In: Journal of personality and social psychology vol. 90 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	9.	Effort on homework in grades 5-9: development, motivational antecedents, and the association with effort on classwork. [electronic resource] by Trautwein, Ulrich Lüdtke, Oliver Kastens, Claudia Köller, Olaf Producer: 20061222 In: Child development vol. 77 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	10.	Reading development in a tracked school system: a longitudinal study over 3 years using propensity score matching. [electronic resource] by Retelsdorf, Jan Becker, Michael Köller, Olaf Möller, Jens Producer: 20140422 In: The British journal of educational psychology vol. 82 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	11.	Childhood intelligence, family background, and gender as drivers of socioeconomic success: The mediating role of education. [electronic resource] by Becker, Michael Baumert, Jürgen Tetzner, Julia Maaz, Kai Köller, Olaf Producer: 20200224 In: Developmental psychology vol. 55 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	12.	Integration of multidimensional self-concept and core personality constructs: construct validation and relations to well-being and achievement. [electronic resource] by Marsh, Herbert W Trautwein, Ulrich Lüdtke, Oliver Köller, Olaf Baumert, Jürgen Producer: 20060802 In: Journal of personality vol. 74 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	13.	Academic self-concept, interest, grades, and standardized test scores: reciprocal effects models of causal ordering. [electronic resource] by Marsh, Herbert W Trautwein, Ulrich Lüdtke, Oliver Köller, Olaf Baumert, Jürgen Producer: 20050809 In: Child development vol. 76 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)