Long waves in the geography of innovation: The rise and decline of regional clusters of creativity over time

We explain the rise and decline of regional clusters of creativity over time. We argue that this dynamic is the result of the interplay of individually rational decision-making processes with collective externalities of unplanned social encounters; migration to particular places at particular times interacts with a preference to engage with similar others. This interplay leads to the rise and subsequent decline of opportunities for encounters between people who operate in different domains, a basic requirement for radical innovative change. The consequent decline of formerly innovative regions creates opportunities for new innovative regions to emerge. We test this theory using three independently curated datasets. The first includes the geocoded places and years of the births and deaths of 124,860 notable individuals who lived in Europe between 1000 and 1900 CE, used to measure opportunities for domain-diverse encounters in regions and regions’ time-varying attractiveness in global mobility networks. The second and third datasets consist of the geocoded locations and founding years of 3,165 Catholic monasteries and of 16,596 publishing houses. We use these organizational innovations as robust, independent indicators for a region's capacity to foster incremental and radical change. Our paper aims to open a broader social network perspective on the rise and decline of regional clusters of creativity over time.     

Not Read,but Nevertheless Solved? Three Experiments on PIRLS Multiple Choice Reading Comprehension Test Items

Multiple-choice (MC) reading comprehension test items comprise three components: text passage, questions about the text, and MC answers. The construct validity of this format has been repeatedly criticized. In three between-subjects experiments, fourth graders (N ₁ = 230, N ₂ = 340, N ₃ = 194) worked on three versions of MC items from the Progress in International Reading Literacy Study 2001 reading comprehension test with relevant components successively deleted: “original version” (text, questions, MC-answers), “version without text” (questions, MC-answers), “version without text and without questions” (only MC-answers). Answering correctly the MC items became more difficult as the relevant information was eliminated. In the two narrative fictional texts presented, the students' performance of the version without text was not better than chance. Conversely in the informational (fictional) text, the students' performance of the version without text was better than chance. In the third condition, students' performance was never better than chance.     

Socio‐emotional adjustment in elementary school boys and girls: Does giftedness make a difference?

Fifty 10‐year‐old gifted children were matched with 50 pupils of average intelligence on the variables ‘gender’ and ‘socio‐economic status’. Three data sources (children, parents, and teachers) on the children's personality and socio‐emotional behavior were used.     

Two Worlds of Academic Publishing: Chemistry and German Sociology in Comparison

The communication infrastructure of modern science is provided by profit-oriented business firms: the publishing houses which print and distribute academic books and journals. Surprisingly, beyond some rather superficial impressions, in science studies little is known about how academic publishers work—in particular, how markets for books and journals look like, how publication decisions are taken, and how the interplay with the scientific community is arranged. We address these questions with a focus on the relation between economic considerations of publishers, on the one hand, and the requirements of scientific communication, on the other. Our contrasting case studies are a very large worldwide operating publisher with regard to chemistry publications and a national publishing house of German sociology. At first, we show how the rather different business approaches of the two types of academic publishing houses look like. Both approaches could reach stability for some time which means not only that publishers earned money according to their profit aspirations but also that the communication requirements of science were sufficiently met. Afterwards, we point out the instabilities that have begun to arise in both fields and may sooner or later erode the former fit of profit-making and scientific communication.     

The psycho-social adjustment of gifted children in middle-childhood

The psycho-social adjustment of 50 gifted (mean IQ=127) and 50 German ten-year-olds of average intelligence (mean IQ=106, matched individually on socio-economic status and gender) was compared. Data from different sources (children, parents, teachers) on social behaviour, (therapy-relevant) behaviour problems, and emotional stability revealed no significant differences between the two ability groups. Gifted elementary-school children are socially and emotionally at least as well adjusted as their non-gifted age-mates.     

Notes on Authors

In research on giftedness, small samples are the rule rather than the exception. Such samples require an especially meticulous research design. The absence of power‐analytical considerations (Le., defining the minimal sample sizes according to a‐ and β ‐error and expected effects) prior to data gathering can easily lead to false conclusions based on faulty data interpretation. Especially with smaller samples, it is strongly recommended that practical relevance (employing a suitable index of effect strength) be taken into consideration when interpreting observed group differences. This is better than relying on “statistical significance” alone. Group studies should not be conducted with extremely small samples. According to a proven “rule of thumb”, each subgroup tested should be comprised of at least 20 to 25 subjects. Because of the prevalence of small sample studies in research on giftedness (gifted individuals are by definition rare), it is important that statistical analyses be conducted in ways which are capable of detecting “significant” effects and which are not, for instance because of small sample size, predestined to conclude that no effects are present, even when they are (i.e., to accept the null hypothesis, even when it is false). The nature of the problem can be made more concrete by looking at a practical example taken from an article of Gefferth and Herskovits (1991).     

Reading comprehension: skill or skills?

Research on the complexity of reading comprehension is highly controversial. In spite of the evidence for a holistic reading comprehension of skilled readers, reading specialists and teachers argue that early reading comprehension is composed of different separate subskills. To investigate this, 38 German reading tests (covering many different aspects of reading comprehension), one spelling test and one speed-of-information-processing test were administered to 220 German second graders (114 girls, 106 boys). The frequency distribution of the 780 correlation coefficients indicated a very homogeneous structure. Taking into account critical points in the design of dimension analytical studies, a principal component analysis (principal axis extraction) led to only one broad general reading comprehension component, accounting for 61% of the total variance (56% for girls, 65% for boys). Reading comprehension of early readers thus appears to be holistic, closely related to general intelligence and verbal problem solving.     

Dimensional comparisons in subject-specific academic self-concepts and achievements: A quasi-experimental approach

Even though marks in different subjects are substantially correlated, the corresponding self-concepts often display a very weak association. The “Internal–External Frame of Reference Model” (I/E-model; Marsh, H. W. (1986). Verbal and math self-concepts: an internal/external frame of reference model. American Educational Research Journal, 23, 129–149) explains this finding: social comparisons (resulting in positive correlations of the self-concepts) and dimensional comparisons (resulting in negative correlations of the self-concepts) are confounded. A rarely tested hypothesis derived from the I/E-model is that the dimensional comparison process only affects the self-concepts, if the students achieve differently in the corresponding subjects. In a sample of N = 1508 students (grades 7 and 8), low correlations of the self-concepts for four subjects could be observed only in students displaying different school-marks in the corresponding subjects. In students who have the same marks in different subjects, the self-concepts showed a substantial positive correlation.     

Families with Gifted Adolescents

Studies of families with gifted adolescents have revealed conflicting results. Adolescents, mothers, and fathers of 84 families with a gifted adolescent and of 95 families with a non‐gifted adolescent evaluated their family system independently. Dependent variables were cohesion, democratic family style (adaptability), organisation, achievement orientation, communication, and intellectual‐cultural orientation. Neither statistically nor practically significant relationships between giftedness and family system variables could be observed from the perspectives of the adolescents, the mothers, or the fathers. Contradictory results from other studies can be primarily attributed to their methodological shortcomings, labelling effects, or both. The mean inter‐rater agreement was r = .46 for mothers and fathers, r = .38 for adolescents and mothers, and r = .35 for adolescents and fathers.