ISO INTERNATIONAL STANDARD 11136 First edition 2014-12-01 Sensory analysis - Methodology - General guidance for conducting hedonic tests with consumers in a controlled area Analyse sensorielleMethodologie-Lignes directrices générales pour la réalisation d'eépreuves hédoniques effectuées avec des consommateurs dans un espace controlé Reference number IS0 11136:2014(E) ISO International Organization for Standardization =Zhejiang Institute of Standardization 5956617 @IS02014 mitted without license from IHS IS0 11136:2014(E) COPYRIGHT PROTECTED DOCUMENT @ISO2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 : CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax +41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland Inteationai br DrganizationforStandardization Not for Resale,2015/3/2005:26:4 No reproduction or networking permited without license from IHS IS0 11136:2014(E) Contents Page Foreword ..V 1 Scope 2 Normative references ..1 3 Terms and definitions 4 Preliminary considerations .3 4.1 Study proposal. .3 4.2 Specification of the target population 4.3 Further specifications .4 5 The consumer sample ..5 5.1 General. ..5 5.2 Recruiting the consumers 5 5.3 Assembling a consumer sample 5.4 Sample segmentation. 1 6 Size of the consumer sample .8 6.1 Decisions of measurement. .8 6.2 Determining the sample size ..8 6.3 Working with subgroups ..9 6.4 Number of product samples and experimental design .9 6.5 Safety margin in recruitment. .9 7 Test area .10 8 Products. .10 8.1 Anonymous presentation of the products ..10 8.2 Preparation and presentation of the products .10 9 Procedures. ..11 9.1 Two groups of hedonic tests .11 9.2 Rating tests .12 9.3 Paired comparison tests ..12 9.4 Ranking test ..13 9.5 Additional questions 9.6 Instructions for the consumers .14 10 Organization of test sessions ..15 10.1 General. .15 10.2 Plans. .15 10.3 Number of products evaluated in a single session .16 10.4 Nature of the products evaluated within a session ..17 10.5 Time of the session. .17 10.6 Repetition of a product within a test ..17 10.7 Pre-test.. .17 11 Analysis of the results .18 11.1 General .18 11.2 Inferential analysis .18 11.3 Ratings (see 9.2) ..18 11.4 Paired comparisons (9.3) ..18 11.5 Ranking (9.4) .18 ii Licensee=Zhejiang Institute of Standardization 5956617 ed without license from IHS Not for Resale, 2015/3/20 05:26:44