The authors examined the methodologies of articles in teaching-and-learning research journals, published in 1994 and in 2004, and classified them as either intervention (based on researcher-manipulated variables) or nonintervention. Consistent with the findings of Hsieh et al., intervention research articles declined from 45% in 1994 to 33% in…

Studied the effectiveness of an innovative statistics course designed to improve students' scientific and statistical reasoning skills during its second presentation. Quantitative and qualitative analyses indicated that the 22 students made significant gains in their ability to reason statistically. Analyses also revealed some specific conceptual…

Providing contextual aids to help students reduce mutual interference between two sentences was studied. When students were presented sentences in distinctive contexts, no interference was observed. An interference effect was obtained when sentences were given in either no context or a nondistinctive context. (MH)

Children listened to sentences under two instructional sets (imagery or repetition) and answered multiple choice alternatives--either identical or similar in meaning to correct information in the sentences; and including or not including previously presented irrelevant information. The sources of interference predicted from recognition memory…

An alternative is proposed to the usual Interaction and Nested Analysis of Variance (ANOVA) models by which a researcher will be able to investigate both interaction and nested questions in the same experiment without committing Type IV errors. (RC)

Sixth graders from a semirural midwestern community were randomly assigned to one of four different learning strategies--imagery, overt repetition, covert repetition, and control. Results showed that imagery instructions facilitated learning performance; overt repetition interfered with performance; and covert repetition was similar to the control…

Eighth-grade students were given short prose passages that described the distinguishing attributes of fictitious towns. Illustrations were devised to represent the attributes, either separately, thematically, or thematically in conjunction with the mnemonic keyword method. Keyword illustrations proved to be highly effective facilitators of…

Seventh- and eighth-grade students were presented fictitious biographies to remember. Keyword students used a prose-learning adaptation of the mnemonic keyword method. It resulted in higher levels of recall than did control instructions. In a subsequent experiment, the basic findings were replicated on immediate and delayed recognition tests.…

Regions of significance in aptitude-by-treatment-interaction studies are examined by the traditional statistical approach and an alternative approach which integrates: (1) testing for the parallelism of two or more regression lines; (2) testing for their identity; and (3) Scheffe's theorem. (Author/RL)

Fourth-grade students learned a list of relatively complex English vocabulary words in two experiments. In both experiments, a keyword contextual method proved effective for enhancing children's acquisition of new vocabulary words. (Author/BW)

Aptitude by treatment interactions are investigated in the context of paired associate learning. Individuals are grouped by preference for visual or verbal items on classifying lists of paired associates and these groups are used to predict performance on criterion lists. (DG)

College undergraduates (N=136) studied a hierarchical plant classification system using a figural taxonomy or a pictorial mnemonomy. Mnemonomy students outperformed taxonomy students on (1) immediate and five-day delayed measures of classification system construction and use; and (2) a test that required solving analogies involving plant terms.…