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Visible learning is a meta-study that analyzes effect sizes of measurable influences on learning outcomes in educational settings. [1] It was published by John Hattie in 2008 and draws upon results from 815 other Meta-analyses. The Times Educational Supplement described Hattie's meta-study as "teaching's holy grail". [2]
John Allan Clinton Hattie ONZM (born 1950) is a New Zealand education academic. He has been a professor of education and director of the Melbourne Education Research Institute at the University of Melbourne , Australia, since March 2011.
In statistics, an effect size is a value measuring the strength of the relationship between two variables in a population, or a sample-based estimate of that quantity. It can refer to the value of a statistic calculated from a sample of data, the value of one parameter for a hypothetical population, or to the equation that operationalizes how statistics or parameters lead to the effect size ...
[1] [2] [3] A study by John Hattie found that the jigsaw method benefits students' learning. [4] The technique splits classes into mixed groups to work on small problems that the group collates into an outcome. [1] For example, an in-class assignment is divided into topics. Students are then split into groups with one member assigned to each topic.
In Visible Learning, John Hattie's meta-analysis of school improvement research, Hattie writes that Invitational Education "is not 'niceness' at work, but rather an approach that places much reliance on the teachers and schools to make learning exciting, engaging, and enduring. Where there are school differences, it is these types of effects ...
Contrary to some class-size studies conducted in the United States, the British researchers found no “threshold effect” in their study. In other words, classes did not have to be reduced to 15 or 20 students before the behavioral benefits started to kick in. Reducing class size at any end of the class-size spectrum seemed to help.
Across all of these students, the average effect size was 0.59 and was significantly larger than those of any other curriculum Hattie studied. [ clarification needed ] Direct Instruction is recognized as one of two effective models of comprehensive school reform and, in many cases, can be integrated into a tiered model system [ definition ...
Jacob Cohen (April 20, 1923 – January 20, 1998) was an American psychologist and statistician best known for his work on statistical power and effect size, which helped to lay foundations for current statistical meta-analysis [1] [2] and the methods of estimation statistics. He gave his name to such measures as Cohen's kappa, Cohen's d, and ...