El curriculo, los materiales didacticos y las practicas de ensenanza y aprendizaje de la educacion cientifica tradicional abusan de los dos factores epistemicos sugeridos por el positivismo logico, la referencia empirica y el razonamiento logico, junto con su epitome el lenguaje matematico, que sostienen la verdad y la objetividad como valores esenciales de la ciencia. La consecuencia mas notable de esta abusiva orientacion positivista es la exclusion, implicita y explicita, de otros valores incompatibles con ellos (factores sociales, culturales o afectivos), tildados como impropios o acientificos por oponerse a la objetividad de la ciencia, aunque sean didacticamente valiosos. Sin embargo, los analisis y las criticas filosoficas, sociologicas e historicas sobre el positivismo logico han enfatizado la presencia de los aspectos afectivos, actitudinales y emocionales, entre otros mas, en la construccion del conocimiento cientifico. Este estudio argumenta la necesidad de los factores actitudinales y afectivos como resortes imprescindibles para la didactica de la ciencia. En esta segunda parte se exponen pruebas empiricas provenientes de la investigacion especifica sobre las variables afectivas relativas a la ciencia y la tecnologia (actitudes hacia la ciencia escolar, creencias sobre naturaleza de la ciencia, imagen publica de la ciencia, actitudes hacia el medio ambiente, vocaciones cientificas, etc.).Palabras claves: educacion cientifica; educacion emocional; motivacion, alfabetizacion cientifica y tecnologica; actitudes relacionadas con ciencia y tecnologia; naturaleza de la ciencia.In defence of the attitudes and emotions in science education (II): empirical evidences coming from the investigationThe traditional school science and technology curriculum, school textbooks and teaching and learning classroom practices abusively uses the two logical positivist epistemic factors, the empiric reference and the logical reasoning, together with its epitome the mathematical language, which sustain the truth and objectivity as if they were the essential values of science. This abusive domain of the epistemic factors produces a main remarkable consequence on science teaching: the exclusion of all those educational features that oppose them, such as the social, cultural or affective features of science and technology, as they are considered inappropriate, non-scientific and incompatible with the objectivity of science, though they may be educationally valuable. However, the multiple criticisms on logical positivism coming from the philosophical, sociological and historical analyses of science have highlighted the presence of the affective, attitudinal and emotional aspects of science on the construction of scientific knowledge. The whole paper argues for the recovering of the attitudinal and affective aspects as important resources in science teaching and learning. This second part reviews some empiric evidences coming from the science education research on the affective variables (attitudes toward the school science, beliefs on the nature of science, public image of science, attitudes toward the environment, scientific vocations, etc.), which suggest the necessity of actively and explicitly coping with these issues in school science, as well as in science education.Key words: school science; emotional education; motivation; scientific and technological literacy; attitudes to science and technology; nature of science.