51     def self.corrected_corrs(simulation)
 52       debugger
 53       #get all items and responses
 54       items = simulation.items
 55       res   = simulation.examinee_responses
 56
 57       #convert string to array of Fixnum and calc the sum for responses
 58       res.each do |x|
 59         if x.response.class == String
 60           x.response = x.response.split(//).map {|s| s.to_f}
 61           x.response.sum = x.r_sum
 62           x.save
 63         elsif

debugger output:
(rdb:1) simulation.items
ArgumentError Exception: wrong number of arguments (1 for 0)
(rdb:1) Simulation.first.items
[#<Item id: 13508, name: "testrun_n10_m02.wgi", created_at: "2011-01-12 06:01:50", updated_at: "2011-01-12 06:01:50", a: 0.894, num: "1", simulation_id: 2629, corr: nil>, #<Item id: 13509, name: "testrun_n10_m02.wgi", created_at: "2011-01-12 06:01:50", updated_at: "2011-01-12 06:01:50", a: 0.234, num: "2", simulation_id: 2629, corr: nil>, #<Item id: 13510, name: "testrun_n10_m02.wgi", created_at: "2011-01-12 06:01:50", updated_at: "2011-01-12 06:01:50", a: -0.196, num: "3", simulation_id: 2629, corr: nil>, #<Item id: 13511, name: "testrun_n10_m02.wgi", created_at: "2011-01-12 06:01:50", updated_at: "2011-01-12 06:01:50", a: 0.389, num: "4", simulation_id: 2629, corr: nil>, #<Item id: 13512, name: "testrun_n10_m02.wgi", created_at: "2011-01-12 06:01:50", updated_at: "2011-01-12 06:01:50", a: 0.534, num: "5", simulation_id: 2629, corr: nil>, #<Item id: 13513, name: "testrun_n10_m02.wgi", created_at: "2011-01-12 06:01:50", updated_at: "2011-01-12 06:01:50", a: 0.418, num: "6", simulation_id: 2629, corr: nil>, #<Item id: 13514, name: "testrun_n10_m02.wgi", created_at: "2011-01-12 06:01:50", updated_at: "2011-01-12 06:01:50", a: -0.469, num: "7", simulation_id: 2629, corr: nil>, #<Item id: 13515, name: "testrun_n10_m02.wgi", created_at: "2011-01-12 06:01:50", updated_at: "2011-01-12 06:01:50", a: 0.176, num: "8", simulation_id: 2629, corr: nil>, #<Item id: 13516, name: "testrun_n10_m02.wgi", created_at: "2011-01-12 06:01:50", updated_at: "2011-01-12 06:01:50", a: 0.371, num: "9", simulation_id: 2629, corr: nil>, #<Item id: 13517, name: "testrun_n10_m02.wgi", created_at: "2011-01-12 06:01:50", updated_at: "2011-01-12 06:01:50", a: 0.793, num: "10", simulation_id: 2629, corr: nil>]
(rdb:1)