An investigation into the prevalence of ecological misconceptions in upper secondary students and implications for pre-service teacher education

Students’ and teachers’ misconceptions are an international concern among researchers in science education; they influence how students learn and teachers’ teach knowledge and are a hindrance in the acquisition of accurate knowledge. This paper reports on a literature synthesis of existing research about ecological misconceptions. One means of improving the application of misconceptions involves using diagnostic tests. These form an important component of a broader conceptual toolkit needed to teach science in conceptually accurate ways. Analysis of the results of a diagnostic test, completed by biology students and pre-service teachers in Ireland, revealed the presence of an unacceptably high level of misconceptions and uncovered flaws in students and teachers’ understanding of ecological concepts. A clear link was observed between the misconceptions present in pre-service teachers’ knowledge base and those dominant in students. In this regard, we discuss implications of these findings for teacher education, from pre-service to continuing education.     

Developmental Trajectories of Acculturation: Links With Family Functioning and Mental Health in Recent‐Immigrant Hispanic Adolescents

The present study was designed to examine acculturative changes, and their effects on mental health and family functioning, in recent‐immigrant Hispanic adolescents. A sample of 302 Hispanic adolescents was assessed five times over a 2½‐year period. Participants completed measures of Hispanic and U.S. practices, collectivist and individualist values, and ethnic and U.S. identity at each time point. Baseline and Time 5 levels of mental health and family functioning were also assessed. Latent class growth analyses produced two‐class solutions for practices, values, and identifications. Adolescents who increased over time in practices and values reported the most adaptive mental health and family functioning. Adolescents who did not change in any acculturation domain reported the least favorable mental health and family functioning.     

The effects of instructional organization and locus of control orientation on meaningful learning in high school biology students

This study investigated the effects on meaningful learning achievement of concept-related instructional organization and locus of control orientation. Two five-week instructional treatments were developed, one which explicitly stressed concept relationships and one which did not. Five hundred and forty-one subjects at six Indiana high schools were involved in the study. Analyses of covariance of posttest and six-week retention test scores with treatment as the independent variable showed no significant treatment effect. Analyses of variance of test scores with locus of control orientation as the independent variable resulted in highly statistically significant differences. Subjects with an internal locus of control orientation achieved more than externally oriented subjects. A two-way analysis of covariance by treatment and locus of control orientation resulted in a statistically significant treatment/locus of control interaction effect for retention test scores. Externally oriented subjects who were exposed to the concept-related treatment generally retained more than those in the comparison group. Internally oriented subjects retained about the same amount of information regardless of treatment group. When the male and female subjects were analyzed separately, the interaction effect appeared greater for females than for males.     

Student attitudes toward science and sciencerelated careers: A program designed to promote a stimulating gender-free learning environment

A project designed to foster the full and fair participation of girls in high-school science classes addressed obstacles, both perceived and actual, to equal participation. In order to modify existing classroom techniques and environments, a Teacher Intervention Program was designed. By means of a workshop and periodic personal communications, teachers were sensitized to the importance of a stimulating, gender-free learning environment. In addition, they were presented with a variety of methods and materials which had been shown to encourage girls in science. Twelve teachers, who were selected randomly, taught in diverse communities throughout one Midwestern state. The subjects tested were students in 24 general biology classes taught by the 12 teachers. Although both qualitative and quantitative measures were used during the research, only the quantitative results are discussed in this paper. Using ANOVA's, treatment group by student sex, a comparison of the mean scores was made for all students, as well as for all females and for all males. The results indicated that the experimental group, compared to the control group, had significantly higher mean scores on tests of attitudes toward science, perceptions of science, extracurricular science activities, and interest in a science-related career.