<p>This volume constitutes the papers of two workshops which were held in conjunction with the 21st International Workshop&nbsp;on&nbsp;Software Engineering and Formal Methods, SEFM 2023 Collocated Workshops, held in Eindhoven, The Netherlands, on&nbsp;November 6-10, 2023<br>
The 10 full papers presented in this book were carefully reviewed and selected from 16 submissions.<br>
SEFM 2023 Collocated Workshops presents the following two workshops:</p>

<ul>
<li>
<ul>
<li>5th International Workshop on Cognition: Interdisciplinary Foundations, Models and Applications (CIFMA 2023)</li>
<li>11th International Workshop on Open Community approaches to Education, Research and Technology&nbsp;(OpenCERT 2023)&nbsp;</li>
</ul>
</li>
</ul>