diff --git a/rhodium/decorators.py b/rhodium/decorators.py
index bd78d2b..4903008 100644
--- a/rhodium/decorators.py
+++ b/rhodium/decorators.py
@@ -17,17 +17,13 @@
 # along with Rhodium.  If not, see <http://www.gnu.org/licenses/>.
 import random
 import inspect
+from abc import ABCMeta
 from .model import Constraint, Lever, Model, Parameter, Response, \
     Uncertainty, CategoricalLever, IntegerLever, PermutationLever, \
     SubsetLever, RealLever, UniformUncertainty, NormalUncertainty, \
-    LogNormalUncertainty
+    LogNormalUncertainty, Direction
 
-MINIMIZE = Response.MINIMIZE
-MAXIMIZE = Response.MAXIMIZE
-INFO = Response.INFO
-IGNORE = Response.IGNORE
-
-class UnnamedObject:
+class UnnamedObject(metaclass=ABCMeta):
 
     def __init__(self, constructor, *args, **kwargs):
         self.constructor = constructor
@@ -89,22 +85,22 @@ def __new__(cls, *args, **kwargs):
 class Minimize(Response):
 
     def __init__(self, name, **kwargs):
-        super().__init__(name, type=Response.MINIMIZE, **kwargs)
+        super().__init__(name, direction=Direction.MINIMIZE, **kwargs)
 
 class Maximize(Response):
 
     def __init__(self, name, **kwargs):
-        super().__init__(name, type=Response.MAXIMIZE, **kwargs)
+        super().__init__(name, direction=Direction.MAXIMIZE, **kwargs)
 
 class Info(Response):
 
     def __init__(self, name, **kwargs):
-        super().__init__(name, type=Response.INFO, **kwargs)
+        super().__init__(name, direction=Direction.INFO, **kwargs)
 
 class Ignore(Response):
 
-    def __init__(self, **kwargs):
-        super().__init__("Ignored" + str(random.randint()), type=Response.IGNORE, **kwargs)
+    def __init__(self, name=None, **kwargs):
+        super().__init__("Ignored" + str(random.randint()) if name is None else name, direction=Direction.IGNORE, **kwargs)
 
 class CallableModel(Model):
 
diff --git a/rhodium/model.py b/rhodium/model.py
index db0379c..3e57abf 100644
--- a/rhodium/model.py
+++ b/rhodium/model.py
@@ -67,11 +67,10 @@ class Direction(Enum):
 class Response(NamedObject):
     """Defines a model response (i.e., output).
 
-    Defines a model response (i.e., output) and its type.  The type can be
-    MINIMIZE, MAXIMIZE, or INFO.  If MINIMIZE or MAXIMIZE, then the response
-    may be used during optimization.  If INFO, the default, the response is
-    purely for informative purposes (e.g., for generating plots) but does not
-    participate in optimization.
+    Defines a model response (i.e., output) and its direction.  If MINIMIZE or
+    MAXIMIZE, then the response may be used during optimization.  If INFO, the
+    default, the response is purely for informative purposes (e.g., for
+    generating plots) but does not participate in optimization.
     """
 
     # These constants are deprecated.  Use the Direction enum instead.
diff --git a/rhodium/test/decorators_test.py b/rhodium/test/decorators_test.py
new file mode 100644
index 0000000..e7f6c21
--- /dev/null
+++ b/rhodium/test/decorators_test.py
@@ -0,0 +1,42 @@
+# Copyright 2015-2024 David Hadka
+#
+# This file is part of Rhodium, a Python module for robust decision
+# making and exploratory modeling.
+#
+# Rhodium is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Rhodium is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Rhodium.  If not, see <http://www.gnu.org/licenses/>.
+import unittest
+from ..model import Direction
+from ..decorators import Minimize, Maximize, Info, Ignore
+
+class TestResponses(unittest.TestCase):
+
+    def testMinimize(self):
+        r = Minimize("foo")
+        self.assertEqual("foo", r.name)
+        self.assertEqual(Direction.MINIMIZE, r.direction)
+        
+    def testMaximize(self):
+        r = Maximize("foo")
+        self.assertEqual("foo", r.name)
+        self.assertEqual(Direction.MAXIMIZE, r.direction)
+        
+    def testInfo(self):
+        r = Info("foo")
+        self.assertEqual("foo", r.name)
+        self.assertEqual(Direction.INFO, r.direction)
+        
+    def testIgnore(self):
+        r = Ignore("foo")
+        self.assertEqual("foo", r.name)
+        self.assertEqual(Direction.IGNORE, r.direction)