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Using data on fathers & parental grandfathers from a largescale survey held among all members of either House of the Dutch Parliament sitting in 1968, the soc background of members of Parliament is traced both re occup & soc stratification. The data show very little stability over 3 generations in occup'al background, & considerable verticle mobility. For the larger parties & for the 2 Houses as a whole, an index is constructed showing the average ranking of fathers & grandfathers on a prestige status scale. It appears that members of the Lower House come from higher soc milieus as measured by the ranking of fathers than members of the Upper House. This is particularly true of socialist members in the Lower House who score higher than either socialist Upper House members, or Lower House members of the 2 larger religious parties. Extensive data on the denomination of parents, grandparents & husbands or wives of members allow some insight into the extent to which traditional religious cleavage lines continue to determine pol'al recruitment. A diagram is presented to show the degree of traditional congruence between pol'al choice & religious denomination (or sub-denomination) & the extent to which 2 new anti-system parties (Democrats '66 & Farmer's Party) have successfully challenged the traditional divisions. On the whole, the close alignment between religious adherence & pol'al choice persists, both when measured by formal church association & actual church attendance. But liberals come from circles which are more traditionally identified with secular poi than members of the socialist party. In the latter case, the pot of 'breaking through' traditional religious boundaries materialized in some deliberate recruitment of orthodox-Protestant & Catholic members. But the traditional left-right division remains evident even when measured by the faith of parents & grandparents; a process of secularization is more characteristic for members of the non-confessional parties than a deliberate crossing of traditional pol'al boundaries by Catholics or orthodox-Protestants. IPSA.

An attempt to give a classification of internal violence, occurring in 40 developing countries, in order to provide a 'structure of violence' for each country in the period 1950-67, & to r this structure to the changes in the real per capita income of these countries. For the collection of the various items of internal violence, Keesings Historical Archives (Dutch version) was used. They were classified as follows: (1) Diffuse SP unrest (strikes, demonstrations, riots, etc, in which people were wounded, killed &/or property was destroyed). (2) Coup d'etat-like activities. (3) Small guerrillas in the countryside & clusters of (anticolonial) violent actions in the towns. (4) Limited civil or anti-colonial war. (5) 'Endemic' guerrillas. (6) Situation of serious anarchy. (7) .1Pol'al' pogroms of total civil or anticolonial war. A 'profile of violence' for each country was constructed. In the Latin Amer couutries coup d'etat activities prevailed; in several African countries these activities became numerous some yrs after independence was obtained; in the Middle Eastern countries all types of violence occurred; & in the ethnically complicated Asian countries, small & endemic guerrillas frequently arose. A relation between types & extent of internal violence, & level of nat'l income & its yr'ly per capita growth could not be proved. The material suggests that nat'l income & changes therein as such, may not be very interesting variables. Distribution of income & changes therein might be more relevant. The difficulty, however, is to obtain reliable data on these variables. A number of suggestions are made. Modified IPSA.

It is assumed that it is the purpose of a theory to explain something. An explanation is an answer to a question of the linguistic form 'why 7'; its logical structure is of the following form: L1,....Ln That is, on the basis of a certain set of postuC1 ....Cn lates, or 'laws,' (L1,....Ln), & a set of given, observed 'circumstances' (C1,....Cn), 'E', the conclusion is deduced. Accordingly, the character of an explanation & consequently, of J a theory, is deductive. II - As regards the structure of a theory several elements should be distinguished. (1) The logical mathematical, or probabilistic system in which the theory is formulated. (2) The calculus which may be conceived as the axiomatic nucleus of the theory & which consists of a set of primitive concepts & postulates governing the use of the primitives. On the basis of primitives & postulates new concepts & theorems are deduced. It is to be noted that the content of the primitives (their 'meaning') consists of the way they are used within the relational structure of the calculus; that is they are defined implicitly. (3) An interpretative system of rules connecting the 'abstract' calculus with other structures of knowledge. In this way the calculus can be given cliff interpretations, which constitute models of the initial calculus. In order to explain empirical reality, there should at least be an empirical model of the calculus, that is, the calculus has to be connected with observable reality. In this case the interpretation is given by a set of 'operational definitions' as they are commonly called. It is shown that these definitions can be conceived as 'quickly decidable sentences' by means of which the empirical model can be falsified. III - The role which theory construction plays with regard to the formation of reality is indicated. Making explicit its logical structure & its empirical interpretation, theory formation leads to 'intersubjectively transmissible knowledge.' It results in the construction of a reality which transcends individual & parochial idiosyncracies & which is accessible to everybody. Of the conditions a theory should fulfill, 2 stand out: (a) it should be consistent, & (b) it should be falsifiable. Finally, it is shown that there is some ground to assume theory formation to be possible-even in the soc sci's-difficult though it may be. IPSA.

The development of a strict methodology of observation & analysis in soc sci has always met with resistance. In the current debate on this topic in the US, 2 positions can be distinguished. There are the 'theorists,' who find their inspiration in the work of recent philosophers such as H. Marcuse & J.-P. Sartre; they rate the formation of a pol'al theory as a 1st priority. Then there are the 'behaviorists,' whose first care is for sci'fic method. This contrast is reviewed on the basis of the document, "Political Science at Berkeley, An Invitation to a Discussion," which was published anonymously by a group of students. The criticism of these students can be summarized under the headings 'commitment' & 'relevance.' As far as commitment is concerned, the critics reproach the behaviorists for not taking stands in important contemporary moral issues, & for identifying with the status quo. It is argued here that what leads to acceptance of & identification with the existing pol'al order is not behaviorist methodology as such, but rather the mood of the behaviorists. As far as 'relevance' is concerned, the critics are impatient with the futile detail analysis & data collecting of the behaviorists. The behaviorists' use of a strict methodology of explanation by generalization leads to a reduction of the scope of analysis. Then only the 'easy' aspects ('easy' to quantify, 'easy' to collect, etc) are analyzed, & discontinuous developments are neglected. The argument presented here is that the lack of a dynamic theory of the pol'al process is an impediment indeed for pol'al sci, but that, again, behaviorism as such cannot be accused of being 'conservative' or 'conformistic': the refutation of race theories, for example, was rather a radical undertaking. It is concluded that for the time being it is not necessary to lay other bounds on pol'al sci than those that follow from the claims of rational debate & intellectual honesty. HA.

Survey results concerning undergraduate students in pol'al & soc sci's at Amsterdam & Leyden suggest the majority of these students prefer the same pol'al party as their fathers. When they deviate from their fathers' party choice, they tend to reject confessional parties (KVP, AR, CH, SGP & GPV). Futhermore, they shift more to the left than to the right in comparison to the party preference of their fathers (a continuum was presumed to exist, in terms of which Dutch parties were ranked from left to right in the following order: CPN, PSP, PvdA, D'66, KVP, AR, CH, VVD, SGP, GPV, BP, rest). The tendency to turn away from confessional parties appeared to be connected with rejection of church membership by students whose fathers belong to a church. Finally, an index of the SE position of the student did not show an appreciable r with preference for leftist parties (PvdA, PSP or CPN). 4 Tables. HA.

A random sample of 912 persons in Delft, the Netherlands, was used to investigate the influence of several variables on the independent variable of SP progressiveness (SPP). A matrix of correlations between 15 items of the original questionnaire was computed: 8 items which were highly related to each other were found. These items were used as indicators for SSP by summing the answers of each R on every item. On these scores an analysis of variance was carried out with 5 independent variables: religion, age, income, level of educ, & sex. The following findings were obtained: (a) Religion had a signif influence on SPP scores; R's who do not have any specific religion tend to be more progressive than others. Furthermore, Catholics tend to be more progressive than Protestants & Dutch-Reformed. (b) The level of educ & income had signif influences on SPP-scores; the higher the income or the educ'al level, the lower the progressiveness-score. (c) The variables age & sex did not have signif influences on SPP-scores. (d) The 5 variables included in the design explained 32% of the total variance in the SPP-scores. Of the remaining 68%, about 27% can be explained in terms of error-variance. This means that about 41% of the total variance in SPP-scores has to be explained by factors which are not included in the design. 3 Tables. Modified HA.

After having stressed the importance of the org'al structure of the pol'al parties in a democracy, the structure is examined of the 10 pol'al parties which had, in the period 1963-1967, representatives in the 2nd Chamber of Parliament, paying particular attention to the extent to which the members have a say in the party. On the basis of the diff kinds of elections (local, provincial, 1st Chamber, 2nd Chamber) the organs of the party are divided into 6 levels. For each level the powers of the organs in question are discussed, in particular the power to elect, to nominate or to delegate individuals in the organs placed higher. The party members, the lowest level, have only the power to elect, to nominate or to delegate for the next level. For all the other levels their power in this respect is indirect. In general it can be said that the higher the level of the organ, the more indirect the power of the party member is concerning the composition of that organ. In the composition of these higher placed organs, other organs--on the composition of which the party members have little or no diff--have an important say. This kind of org'al structure may easily give rise to feelings of frustration on the part of the party members & hampers their activation & participation. 2 Figures, 9 Tables. HA.

A definition of the term `policy' is presented, followed by an analysis of a survey of persons closely involved in housing policy: it appears that party preferences play a role in the judgment of housing policy. Pol'al sci aims at telling what is the actual policy, & not what a policy should be. Gov approval is one of the most important means used in housing policy & this is studied with the help of examples. 'Policy adaptation,' 'expectations,' & 'principles' appear to play an important part in the housing policy of the Netherlands. IPSA.

Report on a survey in which questions were put to a sample of Dutch households about the efficiency of the parliamentary system. A new scale was developed-a quasi-scale according to Guttman-to measure the sense of pol'al self-confidence. Although the total/sum N was too small to make further analysis, it seems likely, on the basis of previous res, that the less positive reactions of the young people came mainly from young women. IPSA.

An examination of G. A. Almond's approach in the field of comparative res on pol'al systems, contained in his Introduction to THE POLITICS OF DEVELOPING AREAS, Princeton, NJ: 1960. His functional approach compares Western & nonWestern systems in terms of a common conceptual framework. However, there are theoretical & practical objections to Almond's work. There is, for instance, no clear theoretical reason why he selects particular functions rather than others; & when applied to existing systems, it becomes very difficult to distinguish pol'al soc'ization from recruitment. The functions presented in the Introduction are not made operational, & this difficulty must be solved before Almond's scheme may become a useful tool in comparative res. IPSA.

An attempt to analyze the concepts of depoliticization & of decline of ideology, followed by a theory which partly explains these phenomena. Some forms of depoliticization & of decline of ideology are described, but the field of investigation is not developed enough to show to what extent these 2 facts really occur. Some of the functions of pol'al ideology are the integration of knowledge & evaluation; the explanation & evolution of the choice of pol'al purposes, of ways & means, of the leaders' positions, of the followers' positions, behavior & opinions; & the integration of adherents & the exclusion of others. IPSA.

Het systematisch literatuuroverzicht (systematic review) heeft de laatste jaren enorm aan impact gewonnen in het evidence-based discours en wordt beschouwd als een belangrijke informatiebron ter ondersteuning van besliskunde op praktijk en politiek niveau. Een systematisch literatuuroverzicht brengt resultaten van diverse individuele studies samen om betrouwbare antwoorden te genereren op welbepaalde vragen en wordt gepromoot door internationale non-profitorganisaties, zoals de Cochrane Collaboration en de Campbell Collaboration.
Auteurs van systematische literatuuroverzichten (reviewers) streven een systematische identificatie, evaluatie en synthese na van alle relevante studies rond een bepaald onderwerp, gebaseerd op een expliciete en voorgedefinieerde methodologie. Hierbij wordt uitgegaan van een te beantwoorden vraag, een welgedefinieerde zoekstrategie, in- en exclusiecriteria voor studies, een kwaliteitsbeoordeling van de geselecteerde studies, en de extractie van resultaten uit die individuele studies, wat resulteert in een synthese. Momenteel is de vraag naar de evaluatie van de effectiviteit van medische, therapeutische, educatieve, sociale of criminologische interventies dominant in deze literatuuroverzichten. Hiervoor worden de resultaten uit studies – bij voorkeur gerandomiseerde, gecontroleerde experimenten – samengebracht door middel van een meta-analyse, een statistische techniek waarmee een gepoold resultaat verkregen wordt dat zich uitspreekt in het voor- of nadeel van een bepaalde interventie. Er is echter een groeiende belangstelling voor en erkenning van de waarde van inzichten uit kwalitatief onderzoek. Die inzichten kunnen immers helpen om de resultaten uit syntheses van kwantitatief onderzoek beter te situeren, om de vraagstelling mee te informeren en om een aantal vragen te beantwoorden die moeilijk door kwantitatief onderzoek kunnen worden beantwoord. Voorbeelden van dergelijke vragen zijn: Hoe moeten we interventies implementeren in een bepaalde context? Hoe kan een interventie verbeterd worden? Sluit de interventie aan bij de subjectieve noden van de doelgroep? Hoe wordt de interventie ervaren door diegenen die ze moeten uitvoeren of ondergaan? Die interesse heeft ertoe geleid dat meerdere onderzoekers zich zijn gaan buigen over de vraag hoe die kwalitatief georiënteerde inzichten op een methodologisch verantwoorde manier kunnen worden samengevat. Uiteraard hoeven syntheses van kwalitatief onderzoek niet aan te sluiten bij een systematisch literatuuroverzicht. Er zijn ook voorbeelden van syntheses die op zichzelf staan, zonder enige link met een bestaand literatuuroverzicht. De laatste jaren werd er enorm geïnvesteerd in het ontwikkelen van methoden voor het uitvoeren van syntheses van kwalitatief onderzoek (Dixon-Woods, Agarwal, Jones, Young & Sutton, 2005; Barnett-Page & Thomas, 2009). Twee van die methoden brachten een ondersteunend softwarepakket op de markt, EPPI-reviewer en QARI. EPPI-reviewer (Evidence for Policy and Practice Information and Coordinating Centre review software) werd ontwikkeld ter ondersteuning van thematische syntheses (Thomas & Harden, 2008), QARI (Qualitative Assessment and Review Instrument) werd ontwikkeld in de context van meta-aggregatie (Joanna Briggs Institute, 2007). Meta-aggregatie werd reeds toegepast in talloze literatuuroverzichten geproduceerd door het Joanna Briggs Institute, meestal als onderdeel van een mixed-methods-review. QARI is een onderdeel van het Joanna Briggs
SUMARI softwarepakket (System for the unified management, assessment and review of information). SUMARI biedt software aan voor het uitwerken van literatuuroverzichten met betrekking tot vraagstellingen naar de effectiviteit, kosten en baten van interventies (syntheses van kwantitatief onderzoek) alsook naar de haalbaarheid, gepastheid en betekenis van interventies of fenomenen (syntheses van kwalitatief onderzoek). QARI kan enkel gebruikt worden voor het beantwoorden van kwalitatieve onderzoeksvragen. Ik illustreer het softwarepakket QARI aan de hand van een meta-aggregatie rond barrières ten aanzien van de implementatie van evidence-based praktijkvoering in België (Hannes, 2008).