The influence of age of acquisition,root frequency,and context availability in processing nouns and verbs

In the Italian language there is a higher number of inflectional suffixes in verbs than in nouns, and this might imply that verbs are more likely to undergo a morphological analysis in terms of root and suffix as compared to nouns (Traficante & Burani, unpublished observations). Moreover, verbs tend to be more abstract than nouns, and this aspect might make verb processing more difficult. Finally, the developmental gap in the production of nouns and verbs suggests that age of acquisition might affect noun and verbs differently. Nouns and verbs were presented in a lexical decision and in a naming task. The morphological variable root frequency in addition to word frequency, length and word age of acquisition, and the semantic variables concreteness and context availability (Schwanenflugel, Harnishfeger, & Stowe, 1988) were used as predictors in multiple-regression analyses in which lexical decision and naming latencies were the dependent variables. The results showed that age of acquisition, context availability, and root frequency are all important in predicting both lexical decision and naming latencies for nouns and verbs, but age of acquisition and root frequency are better predictors of the differences in processing Italian nouns and verbs.     

Neural representationalism,the Hard Problem of Content and vitiated verdicts. A reply to Hutto & Myin (2013)

Colombo’s (Phenomenology and the Cognitive Sciences, 2013) plea for neural representationalism is the focus of a recent contribution to Phenomenology and Cognitive Science by Daniel D. Hutto and Erik Myin. In that paper, Hutto and Myin have tried to show that my arguments fail badly. Here, I want to respond to their critique clarifying the type of neural representationalism put forward in my (Phenomenology and the Cognitive Sciences, 2013) piece, and to take the opportunity to make a few remarks of general interest concerning what Hutto and Myin have dubbed “the Hard Problem of Content.”     

The Effects of Hippocampal and Area Parahippocampalis Lesions in Pigeons: II. Concurrent Discrimination and Spatial Memory

Two experiments were conducted to examine the effects of bilateral hippocampus (Hp) and area parahippocampalis (APH) lesions in pigeons on the acquisition of a visual and spatial task. In Experiment 1, pigeons were trained on three successive six-pair concurrent discrimination tasks, each using a novel set of stimuli. There was no difference between control unoperated pigeons and Hp-APH pigeons in terms of the number of sessions required to learn either the first, second, or third concurrent discrimination task. In Experiment 2, the same pigeons were trained on an open-field spatial task similar in many ways to the radial-arm maze task used with rats. In contrast to the absence of impairments on the visual concurrent discrimination task, pigeons with Hp-APH lesions were severely impaired on the acquisition of the spatial task. These findings support the view that the Hp-APH in pigeons is important for the processing of spatial, rather than visual information.     

The new technology and its human impact

In the years that have passed since publication of the Club of Rome's seminal report “Limits to Growth,” the issues raised in terms of development, resource use and the environment have become ever more pressing. The potential of advances in science and technology to affect all aspects of life, including development, was then little understood. Today's unparalleled burst in scientific and technological creativity has given new options and opportunities to the world economic system.

Central to this process is a series of concepts which includes the scientification of technology, by which technology is increasingly generated and developed on scientific bases, the breaking down of interdisciplinary barriers and mankind's new found capacity literally to invent resources, leading to the emergence of whole categories of new materials. These changes make possible a new approach to economic growth, relying on decentralization and flexibility and the selection of technology mixes best suited to different socio‐economic and cultural contexts. In parallel, the key importance above all of the information technologies is producing a dematerialization of goods, a trend exemplified by the shift from product oriented to function oriented industries.

The new technologies of the 1980s are cross‐fertilizing and self‐disseminative. They are creating an exceptional number of innovative options in processes, products, services, organization and markets. Mature industrial sectors can undergo a process of rejuvenation to recover competitiveness by the grafting of advanced technologies onto traditional activities. The results are already evident in industrialized countries, such as Italy. The flexibility offered by the new technologies offers perhaps our best hope for a solution to the widening gap between rich and poor nations, contrary to the belief that identifies in advances in science and technology the seeds of a process of polarization dividing the world.

The countries of the United States, Japan and Western Europe—the so‐called Triad Power—dominate the emerging technologies and their applications. In fact, given the pace of today's technological revolution, developing countries are effectively excluded from active participation in the process of technological change. New technologies are not “off the peg,” they have to be learned and controlled, to be introduced into an existing flexible system possessing trained manpower and an adequate capital base. Introduction into the Third World, where these essential conditions are frequently lacking, will not be a painless process. Technology transfer without adaptation is likely to have undesirable cultural and societal disadvantages.

North and South are simultaneously experiencing radically different processes of evolution: the former, through restructuring and innovation; the latter, through the drive for more quantitative growth. Continuing stress on quantitative growth carries with it the risk that other goals—environmental quality, even the eradication of poverty—may suffer. Here lies the possibility that unless economic patterns change, today's imbalance between the haves and the have nots may be perpetuated or even consolidated.

The countries of the North individually all face problems in addressing these issues. The international banking system is hamstrung with the problems of Third World debt. Primary producers no longer command high prices for their raw materials on world markets and so this source of development funding is also drying up. The need is therefore for a global approach. In each Third World situation, specific needs and requirements must be identified to be tackled via technology blending, whereby a mix of emerging and traditional technologies is selected to raise the quality of output to the levels now demanded by a sophisticated world economy.

Another important area is that of energy, together with the worsening environmental and even climatic effects of energy policies. The need is for a long term strategic view to marshall the contribution new technologies can make to improving the lot of mankind in full respect for his environment.

Technological change also implies societal change. In labor markets, labor mismatch creates pockets of employment which are difficult to eradicate. Yet, overall, the hope is that expanding economic horizons will create unlimited opportunities for new jobs and new skills. The key is education and training. A feed and feedback mechanism between education and the economy represents an intangible investment in the future.

Economic growth, technological innovation, development of culture and society, have always moved together with synergism. Current changes are not so much just physical as conceptual. We are passing from a mechanical (or mechanistic) society to one that can be termed cybernetic. Causality, sequentiality and hierarchy are giving way to a functional interdependence at a systems level. Greater participation will produce more opportunities for self‐fulfillment. As old social equilibria collapse, management of social change can be seen to be as important as management of technological change.

The technological revolution has deep roots in Western culture. It is a liberating force that can lead to greater cultural enrichment. By understanding the changes now underway, we can ensure that the new pattern of society that emerges from exploitation of the new technologies retains man at its center and so benefits the whole of humanity.     

The Effects of Hippocampal and Area Parahippocampalis Lesions in Pigeons: I. Delayed Matching to Sample

Four experiments were conducted to determine the effects of bilateral damage to the hippocampus and area parahippocampalis (Hp-APH) on visual memory in pigeons using the delayed matching-to-sample (DMS) procedure. In Experiment 1, we generated visual retention gradients with delays of 0, 1.5, 3, 6, and 12 sec both preoperatively and postoperatively in three pigeons with considerable preoperative visual DMS experience. Bilateral Hp-APH lesions had no effect whatsoever on visual retention. In Experiment 2, we examined the effects of Hp-APH lesions on both the acquisition of a visual DMS task with a 0-sec delay, and the subsequent retention performance with delays of 0, 3, 6, 12, and 24 sec. There was no difference between unoperated control pigeons and Hp-APH pigeons either in terms of the number of sessions required to learn the visual DMS task or in terms of their subsequent visual retention performance levels. In Experiments 3 and 4, we examined whether Hp-APH pigeons might be more sensitive than control pigeons to the effects of proactive interference (by reducing the duration of the intertrial interval) and retroactive interference (by introducing delay-interval illumination). Although reducing the duration of the intertrial interval and increasing the level of delay-interval illumination both resulted in lower performance levels on the visual DMS task, there was no indication that the Hp-APH pigeons were any more affected by the changes in interference levels than were unoperated control pigeons. These findings support the view that the Hp-APH in pigeons plays little role in the processing and retention of purely visual information.