Michael B. W. Wolfe

Memory for narrative and expository text: Independent influences of semantic associations and text organization

The author examined memory for text in terms of the independent influences of semantic knowledge associations and text organization. Semantic associations were operationalized as the semantic relatedness between individual text concepts and the text as a whole and assessed with latent semantic analysis. The author assessed text organization by simulating comprehension with the construction integration model. Text organization consistently accounted for unique variance in recall. Semantic associations strongly predicted expository recall and predicted narrative recall significantly but to a lesser extent, even when the familiarity of the narrative content was manipulated. Results suggest that prior semantic associations and novel associations in the text structure influence memory independently, and that these influences can be affected by text genre.

Use of latent semantic analysis for predicting psychological phenomena: Two issues and proposed solutions

Latent semantic analysis (LSA) is a computational model of human knowledge representation that approximates semantic relatedness judgments. Two issues are discussed that researchers must attend to when evaluating the utility of LSA for predicting psychological phenomena. First, the role of semantic relatedness in the psychological process of interest must be understood. LSA indices of similarity should then be derived from this theoretical understanding. Second, the knowledge base (semantic space) from which similarity indices are generated must contain “knowledge” that is appropriate to the task at hand. Proposed solutions are illustrated with data from an experiment in which LSA-based indices were generated from theoretical analysis of the processes involved in understanding two conflicting accounts of a historical event. These indices predict the complexity of subsequent student reasoning about the event, as well as hand-coded predictions generated from think-aloud protocols collected when students were reading the accounts of the event.

Causal and Semantic Relatedness in Discourse Understanding and Representation

Processing time and memory for sentences were examined as a function of the degree of semantic and causal relatedness between sentences in short narratives. In Experiments 1-2B, semantic and causal relatedness between sentence pairs was independently manipulated. Causal relatedness was assessed through pretesting and semantic relatedness was assessed with Latent Semantic Analysis. Causal relatedness influenced processing time and memory. Semantic relatedness influenced memory, and influenced processing time when causality was not manipulated within an experiment and the situation described by the sentence pairs was somewhat difficult to construct. Experiment 3 utilized naturalistic texts. Semantic and causal relatedness between sentences influenced online judgments of fit and free recall. Results are discussed in terms of bottom-up and top-down theories of text processing.

Processing and memory of information presented in narrative or expository texts

BACKGROUND Previous research suggests that narrative and expository texts differ in the extent to which they prompt students to integrate to-be-learned content with relevant prior knowledge during comprehension. AIMS We expand on previous research by examining on-line processing and representation in memory of to-be-learned content that is embedded in narrative or expository texts. We are particularly interested in how differences in the use of relevant prior knowledge leads to differences in terms of levels of discourse representation (textbase vs. situation model). SAMPLES A total of 61 university undergraduates in Expt 1, and 160 in Expt 2. METHODS In Expt 1, subjects thought out loud while comprehending circulatory system content embedded in a narrative or expository text, followed by free recall of text content. In Expt 2, subjects read silently and completed a sentence recognition task to assess memory. RESULTS In Expt 1, subjects made more associations to prior knowledge while reading the expository text, and recalled more content. Content recall was also correlated with amount of relevant prior knowledge for subjects who read the expository text but not the narrative text. In Expt 2, subjects reading the expository text (compared to the narrative text) had a weaker textbase representation of the to-be-learned content, but a marginally stronger situation model. CONCLUSIONS Results suggest that in terms of to-be-learned content, expository texts trigger students to utilize relevant prior knowledge more than narrative texts.

Effects of Text Content and Beliefs on Informal Argument Evaluation

ABSTRACT We examined the influence of reading a one-sided text on informal argument evaluation. After reporting initial beliefs in a separate online prescreening, subjects with polarized beliefs read a belief-consistent or -inconsistent text about the benefits of spanking children as a means of discipline. After reading, subjects reported their beliefs and judged the soundness of a series of one-sentence informal arguments that made belief-consistent or -inconsistent claims. Subjects were more likely to accept arguments as sound when the claims were consistent with the position of the text they read and reject them as unsound when the claims were inconsistent with the text position. Process mediation modeling revealed that text position (pro vs. con) influenced reasoning biases both directly and indirectly via the extent to which they experienced belief change. These findings suggest that informal reasoning biases can be malleable and are influenced by both text content and by subjects’ beliefs at the time of reasoning.

Poor Metacognitive Awareness of Belief Change

When people change beliefs as a result of reading a text, are they aware of these changes? This question was examined for beliefs about spanking as an effective means of discipline. In two experiments, subjects reported beliefs about spanking effectiveness during a prescreening session. In a subsequent experimental session, subjects read a one-sided text that advocated a belief consistent or inconsistent position on the topic. After reading, subjects reported their current beliefs and attempted to recollect their initial beliefs. Subjects reading a belief inconsistent text were more likely to change their beliefs than those who read a belief consistent text. Recollections of initial beliefs tended to be biased in the direction of subjects’ current beliefs. In addition, the relationship between the belief consistency of the text read and accuracy of belief recollections was mediated by belief change. This belief memory bias was independent of on-line text processing and comprehension measures, and indicates poor metacognitive awareness of belief change.