Scientific Annals of the Psychological Society of Northern Greece VOLUME 8 INFORMATION SCIENTIFIC ANNALS  OF THE PSYCHOLOGICAL SOCIETY OF NORTHERN GREECE ΙSBN 978-960-9405-65-2 Edited annually by the Psychological Society of Northern Greece (PSNG): Volume 8, 2010 Legally responsible: George Grouios, President of the Psychological Society of Northern Greece Department of Physical Education and Sport Sciences, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece. Phone: +30-2310-992177. E-mail: ggrouios@phed.auth.gr Executive Committee of PSNG: George Grouios  Mary Kosmidis Symeon Vlachopoulos Angeliki Leondari Panayiota Metallidou Anastasia Efklides Andreas Brouzos Vasiliki Deliyianni-Kouimtzis    President Secretary Treasurer Member Member Ex officio member Ex officio member Ex officio member  Editors of the Scientific Annals of the Psychological Society of Northern Greece Editor-in-Chief: Andreas Brouzos Assistant Editors: Anastasia Alevriadou Associate Editor: Consultant Editor: Plousia Misailidi Anastasia Efklides   Symeon Vlachopoulos Panayiota Metallidou Fotini Bonoti George Panagis     Editors of the 8th Volume: Panayota Metallidou Pagona Roussi Plousia Misailidi Anastasia Efklides Aristotle University of Thessaloniki, Greece Aristotle University of Thessaloniki, Greece University of Ioannina, Greece Aristotle University of Thessaloniki, Greece Editorial Board George Grouios Shulamith Kreitler Angeliki Leontari Diomedes Markoulis Robert Neimeyer Markku Niemivirta Jose M. Prieto Wolfgang Schnotz Yannis Theodorakis Maria Tzouriadou Marja Vauras Marcel Veenman Filippos Vlachos Aristotle University of Thessaloniki, Greece Tel-Aviv University, Israel University of Thessaly, Volos, Greece Aristotle University of Thessaloniki, Greece University of Memphis, USA University of Helsinki, Finland Complutense University, Madrid, Spain University of Koblenz-Landau, Landau, Germany University of Thessaly, Volos, Greece Aristotle University of Thessaloniki, Greece University of Turku, Finland University of Leiden, The Netherlands University of Thessaly, Volos, Greece Publisher: Pedio S.A., Methonis 4 & Ippokratous, 106 80 Athens, Greece. Phone: +30 210 3390204-5-6. Fax: +30 210 3390209. © Copyright 2010: Psychological Society of Northern Greece (PSNG) All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) for commercial purposes without the written permission of the copyright owners. Manuscripts submitted to the journal in no case are returned back. Τόμος 8, 2010                                                                                               Volume 8, 2010 ΕΠΙΣΤΗΜΟΝΙΚΗ ΕΠΕΤΗΡΙΔΑ  ΤΗΣ  ΨΥΧΟΛΟΓΙΚΗΣ ΕΤΑΙΡΕΙΑΣ ΒΟΡΕΙΟΥ ΕΛΛΑΔΟΣ έτος ιδρύσεως 2002 SCIENTIFIC ANNALS OF THE  PSYCHOLOGICAL SOCIETY OF NORTHERN GREECE founded 2002 ΕΡΕΥΝΕΣ ΣΤΗΝ ΨΥΧΟΛΟΓΙΚΗ ΑΞΙΟΛΟΓΗΣΗ Επιμέλεια Σύνταξης και Έκδοσης:                   Ανδρέας Μπρούζος                   Πλουσία Μισαηλίδη                   Aναστασία Ευκλείδη STUDIES IN PSYCHOLOGICAL ASSESSMENT Editors:          Andreas Brouzos          Plousia Misailidi          Anastasia Efklides ΕΛΛΗΝΙΚΑ ΓΡΑΜΜΑΤΑ                                                                               ELLINIKA GRAMMATA Τόμος 8, 2010                                                                                                  Volume 8, 2010 CONTENTS Authors list .........................................................................................................................XI Reviewers list ....................................................................................................................XIII Preface          Andreas Brouzos ........................................................................................................XV Prologue          Panayiota Μetallidou and Pagona Roussi........................................................................XVII Basic concepts and applications of structural equation modeling in the field of social sciences          Nikolaos Tsigilis........................................................................................................... 1 Measurement invariance in comparative psychological research          Symeon P. Vlachopoulos ……………................................................................................. 37 Modeling the interrelations of adolescent loneliness, social anxiety and social phobia         Niina Junttila, Eero Laakkonen, Päivi M. Niemi, and         Klaus Ranta .............................................................................................................. 69 Factorial validity and invariance of the Multisource Assessment of Social Competence Scale        Panayiota Μetallidou, Anastasia Efklides, Eleftheria Gonida,        Ioulia Dousi, Fotini Dina, Marja Vauras, and Niina Junttila ...................…………………………………… 101 The use of logistic regression models in the empirical research of social sciences         Charalambos Gnardellis .………………………........................................................................ 129 Application of multilevel modeling in educational and social psychology         Georgios D. Sideridis and Konstantinos Kafetsios ............................................................ 157 Illness representations, subjective health, and final appraisal of illness outcomes: Dispositional optimism as a moderator of their interrelations          Evangelos C. Karademas........................................................................................... 197 Quality in young people’s dating relationships and protection during their sexual contacts         Panos S. Kordoutis ……………………………….…..................................................................... 221 The contribution of the narrative approach to understanding the experience of breast cancer         Evrinomy Avdi and Theodora Karamba ........................................................................ 263