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Students tend to choose a field of study in which they believe they possess the most skills by comparing their performance across different domains, such as math and English. These intraindividual comparisons between domains are known as dimensional comparisons (Möller & Marsh, 2013). There are individual differences in dimensional comparisons, such that some students engage in stronger comparisons than others do, yet few studies have examined the sources of these individual differences. In addition to objective performance, students sometimes also receive subjective feedback (e.g., praise) from parents and teachers. However, it is unknown whether and how this feedback influences dimensional comparisons to shape students’ domain-specific motivational beliefs. Therefore, we first examined whether theories of intelligence (TOIs) moderated dimensional comparison processes in different age groups in two studies. We then investigated whether receiving disproportionate praise in different domains affected students’ domain-specific motivational beliefs. Results showed that incremental TOI moderated math grades’ relation to verbal competence self-concepts in 10th and 11th graders (N = 140). It also moderated verbal grades’ relation to verbal intrinsic values in 1st- to 5th-year college students (N = 136). However, we did not find such moderations in other age groups. Regarding the praise manipulation, 7th to 9th graders (N = 108) showed heightened verbal competence self-concepts after receiving praise on either math or verbal performance. First- to fifth-year college students also showed increased verbal intrinsic values after receiving praise on verbal performance. TOI moderated students’ responses to praise manipulations. These studies shed light on students’ development of domain-specific motivational beliefs and inspire future research. / Psychology

本研究主要依據建構主義理論基礎，在一般教學和學習理論基礎上建構所謂的「建構主義取向的教學方法」。為探討建構取向教學法在數學學習成效的效果，乃選取國中一年級兩個班為研究對象，進行為期兩個月的教學實驗，以進行實地的建構取向教學與傳統教學之比較，並對學生在教學前後與其間所填答的問卷或資料進行分析，本研究所採的研究工具計有：(一)數學段考考卷；(二)數學學習成就測驗；(三)國中新生數學能力測驗；(四)數學學習經驗量表；(五)學習日記表格；(六)數學學習回饋問卷。使用的資料分析方法有：(一)獨立樣本單因子共變數分析；(二)質的分析。精分析結果如下： 一、建議教學組的學生與傳統教學組的學生在數學段考成績無顯著差異存在。 二、建構教學組的學生與傳統教學組的學生在數學學習成就測驗後測得分有顯著差異存在。且建構教學組顯著優於傳統教學組。 三、建構教學組的學生與傳統教學組的學生在數學焦慮量表後測得分無顯著差異存在。 四、建構教學組的學生與傳統教學組的學生在數學動機信念量表後測得分有顯著差異存在。且建構教學組顯著優於傳統教學組。 五、建構教學組的學生與傳統教學組的學生在班級氣氛量表後測得分有顯著差異存在。且建構教學組顯著優於傳統教學組。 六、建構教學組的學生與傳統教學組的學生在民主溝通態度量表後測得分無顯著差異存在。 七、由接受建議教學法的學生的數學學習回饋問卷與學習日記上可發現多數學生對建議教學持正面肯定的態度。 本研究針對上述發現加以討論，並對數學教學、行政措施與未來研究提出若干建議以供參考。 / The experiment on math achievement of the seventh grade students - the constructvist approach